translation
follower
transmission
pushrod
gear change
throw-out
driving shaft
forward
shift gears
gearmotor
gear
gear mechanism
moving part
tranny
PRNDL
clash gear
transmission system
motionwork
synchronizer
driving belt
downshift
reverse
freewheel
manual
balance
clutch
rev counter
reverse gear
mechanicalness
balance wheel
self-propelled vehicle
third
Hooke's gearing
runner
multimotor
stator
gearbox
drivetrain
shoe
vibromotor
cogwheel
pivot gearing
power tool
hot shift
epicyclic gear
drive line
stroke
drive line system
locomotive
accelerator
gear train
feed
universal joint
monomotor
kickdown
synchromesh
axle-hung
gearwork
leader
gear down
wheelwork
reloader
rodding
transmission shaft
tape drive
automobile engine
racing jack
gear lever
scamperingly
geared
engine mount
shift
gas
gun
turret head
crankshaft
gas pedal
torque meter
connecting rod
differential
outstroke
auto
automatic transmission
forecarriage
throttle
pecker
accelerator pedal
trundle
automatic drive
cambox
jumpout
tachometer
tractor
forward
reverse
multimotor
monomotor
axle-hung
geared
scamperingly
translation
follower
transmission
pushrod
gear change
throw-out
driving shaft
gearmotor
gear
gear mechanism
moving part
tranny
PRNDL
clash gear
transmission system
motionwork
synchronizer
driving belt
downshift
freewheel
manual
balance
clutch
rev counter
reverse gear
mechanicalness
balance wheel
self-propelled vehicle
third
Hooke's gearing
reverse
runner
stator
gearbox
drivetrain
shoe
vibromotor
cogwheel
pivot gearing
power tool
hot shift
epicyclic gear
drive line
stroke
drive line system
locomotive
accelerator
gear train
feed
universal joint
kickdown
synchromesh
gearwork
leader
wheelwork
reloader
rodding
transmission shaft
tape drive
automobile engine
racing jack
gear lever
engine mount
shift
gas
gun
turret head
crankshaft
gas pedal
torque meter
connecting rod
differential
outstroke
auto
automatic transmission
forecarriage
throttle
pecker
accelerator pedal
trundle
automatic drive
cambox
jumpout
tachometer
tractor
shift gears
gear down
noun
- A transfer of motion occurring within a gearbox.
- A relation between two mathematical figures such as a straight line where the coordinates of each point in one figure is a constant added to the coordinates of a corresponding point in the other figure.
- The conversion of something from one form or medium to another.
- A transfer of a holy relic from one shrine to another.
- The automatic retransmission of a telegraph message.
- A transfer of a disease from one body part to another.
- An ascension to Heaven without death.
- A transfer of a bishop from one diocese to another.
- A motion or compulsion to motion in a straight line without rotation or other deformation.
- The conversion of text from one language to another.
- The discipline or study of translating written language (as opposed to interpretation, which concerns itself with spoken language).
- The process whereby a strand of mRNA directs assembly of amino acids into proteins within a ribosome.
- The product or end result of an act of translating, in its various senses.
noun
- A machine part receiving motion from another.
- A metal piece placed at the top of a candle to keep the wax melting evenly.
- One who is a part of master's physical group, such as a servant or retainer.
- A tool used to remove the core from a pin-tumbler lock without causing the driver pins and springs to fall out.
- Any of the three players (the ruckman, ruck rover, and rover) who usually follow the ball around the ground rather than occupying a fixed position.
- An imitator, who follows another's example.
- A pursuer.
- An account holder who subscribes to see content from another account on a social media platform.
- One who follows, comes after another.
- A man courting a maidservant; suitor.
- Something that comes after another thing.
- One who follows mentally, adherer to the opinions, ideas or teachings of another, a movement etc.
- Young cattle.
noun
- An assembly of gears through which power is transmitted from the engine to the driveshaft in a motor car / automobile; a gearbox.
- The fact of being transmitted.
- Something that is transmitted, such as a message, picture, or a disease; the sending of such a thing.
- The passage of a nerve impulse across synapses.
- The passing of a communicable disease from an infected host individual or group to a conspecific individual or group.
- The right possessed by an heir or legatee of transmitting to his successor(s) any inheritance, legacy, right, or privilege, to which he is entitled, even if he should die without enjoying or exercising it.
- The act of transmitting, e.g. data or electric power.
noun
- A mechanism to rapidly disengage a portion of a machine from the source of its motion, as an automotive clutch.
- A put-out caused by a throw to a base of a fielded ground ball.
- An item that is thrown out to an audience or crowd, usually for dramatic effect.
- A discard, rejection.
- A folded paper in a publication, such as a book or a greeting card, that is intended to be unfolded for use outside the normal form factor of the publication.
- An overarm throw of the ball from a goalkeeper.
adj
- of the transmission gear causing forward movement in a motor vehicle
- at or near or directed toward the front
- used of temperament or behavior; lacking restraint or modesty
noun
- the person who plays the position of forward in certain games, such as basketball, soccer, or hockey
- a position on a basketball, soccer, or hockey team
verb
adj
adv
noun
- a mechanism for transmitting motion for some specific purpose (as the steering gear of a vehicle)
- a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
- wheelwork consisting of a connected set of rotating gears by which force is transmitted or motion or torque is changed
- equipment consisting of miscellaneous articles needed for a particular operation or sport etc.
verb
noun
- Part of a synchromesh manual transmission that allows the smooth engagement of gears.
- An algorithm that can be applied to a synchronous distributed algorithm to produce a version that operates in asynchronous networks.
- A kind of arbiter.
- A device for aligning multiple film strips in a replay or editing device.
- A device that permits an automatic weapon to fire between the blades of a revolving propeller.
noun
- A shift of a transmission into a lower gear.
- A change in career or lifestyle to one which is not as well paid but less stressful and more personally rewarding.
- A change of direction or a movement downwards.
- A reduction in quality or quantity.
verb
- To reduce (something) in quality or quantity (as effect, scope, speed, etc.)
- To shift a transmission into a lower gear.
- To shift (a car or bicycle) into a lower gear.
- To function at a lower rate; to slacken.
- To change (one's career or lifestyle) to one which is not as well paid but less stressful and more personally rewarding.
- To change one's career or lifestyle to one which is not as well paid but less stressful and more personally rewarding.
adj
noun
- the gears by which the motion of a machine can be reversed
- a relation of direct opposition
- an unfortunate happening that hinders or impedes; something that is thwarting or frustrating
- the side of a coin or medal that does not bear the principal design
- (American football) a running play in which a back running in one direction hands the ball to a back running in the opposite direction
- turning in the opposite direction
adj
verb
noun
verb
noun
- A manual transmission; a gearbox, especially of a motorized vehicle, shifted by the operator.
- A vehicle with a manual transmission.
- A similar maneuver on a skateboard, lifting the front or back wheels while keeping the tail or nose of the board from touching the ground.
- A keyboard for the hands on a harpsichord, organ, or other musical instrument.
- A drill in the use of weapons, etc.
- Manual control or operation.
- A handbook.
- An old office-book like the modern Roman Catholic ritual.
- A manual typewriter (as contrasted with an electronic one).
- Manual measurement of the blood pressure, done with a manual sphygmomanometer.
- A bicycle technique whereby the front wheel is held aloft by the rider, without the use of pedal force.
- A booklet that instructs on the usage of a particular machine or product.
adj
noun
- a wheel that regulates the rate of movement in a machine; especially a wheel oscillating against the hairspring of a timepiece to regulate its beat
- a state of equilibrium
- equality between the totals of the credit and debit sides of an account
- harmonious arrangement or relation of parts or elements within a whole (as in a design)
- equality of distribution
- something left after other parts have been taken away
- the difference between the totals of the credit and debit sides of an account
- (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane
- a weight that balances another weight
- a scale for weighing; depends on pull of gravity
verb
noun
- The pedal in a car that disengages power and torque transmission from the engine (through the drivetrain) to the drive wheels.
- The claw of a predatory animal or bird.
- An important or critical situation.
- A brood of chickens or a sitting of eggs.
- A device to interrupt power transmission, commonly used to separate the engine and gearbox in a car.
- A fastener that attaches to the back of a tack pin to secure an accessory to clothing. (See Clutch (pin fastener).)
- A small handbag or purse with no straps or handle.
- A group or bunch (of people or things).
- Any device for gripping an object, as at the end of a chain or tackle.
- A grip, especially one seen as rapacious or evil.
- A difficult maneuver
verb
- To unexpectedly or luckily succeed in a difficult activity.
- To hatch.
- To seize, as though with claws.
- To grip or grasp tightly.
- To win in a 1vX (one versus X) situation.
adj
noun
- The third gear of a gearbox.
- The person or thing in the third position.
- One of three equal parts of a whole.
- third base
- A third-class degree, awarded to the lowest achievers in an honours degree programme
- An interval consisting of the first and third notes in a scale.
- A handicap of one stroke every third hole.
adj
verb
noun
- A part of an apparatus that moves quickly.
- Somebody who controls or manages (e.g. a system).
- A player who runs for a batsman who is too injured to run; he is dressed exactly as the injured batsman, and carries a bat.
- Anyone sent on an errand or with communications, especially for a bank (or, historically, a foot soldier responsible for carrying messages during war).
- A short sling with a carabiner on either end, used to link the climbing rope to a bolt or other protection such as a nut or friend.
- An automobile; a working or driveable automobile.
- A competitor in a poker tournament.
- A person or vessel who runs blockades or engages in smuggling. (Especially used in combination, e.g. gunrunner).
- Part of a shoe that is stitched to the bottom of the upper so it can be glued to the sole.
- A speedrunner.
- A long, narrow carpet for a high traffic area such as a hall or stairs.
- An employee of a sports agent who tries to recruit possible player clients for the agent.
- A quick escape away from a scene.
- A type of soft-soled shoe originally intended for runners.
- A rope to increase the power of a tackle.
- A person who moves, on foot, at a fast pace, especially an athlete.
- Any entrant, person or animal (especially a horse), for a race or any competition; a candidate for an election.
- An idea or plan that has potential to be adopted or put into operation.
- A part of a cigarette that is burning unevenly.
- A baserunner.
- One who runs away; a deserter or escapee.
- The blade of an ice skate.
- The channel or strip on which a drawer is opened and closed.
- Part of a mechanism which allows something to be pulled out for maintenance.
- The curved base of a rocking chair.
- In saddlery, a loop of metal through which a rein is passed.
- In molding, a channel cut in a mold.
- The rotating-stone of a grinding-mill.
- The movable piece to which the ribs of an umbrella are attached.
- A tool in which lenses are fastened for polishing.
- A long stolon sent out by a plant (such as strawberry), in order to root new plantlets, or a plant that propagates by using such runners.
- A running gag
- A smooth strip on which a sledge runs.
- A leaping food fish (Elagatis pinnulatis) of Florida and the West Indies; the skipjack, shoemaker, or yellowtail.
- A restaurant employee responsible for taking food from the kitchens to the tables.
- A person hired by a gambling establishment to locate potential customers and bring them in.
- A person (from one or the other team) who runs out onto the field during the game to take verbal instructions from the coach to the players. A runner mustn't interfere with play, and may have to wear an identifying shirt to make clear his or her purpose on the field.
- A strip of fabric used to decorate or protect a table or dressing table.
noun
- A drag, or sliding piece of wood or iron, placed under the wheel of a loaded vehicle, to retard its motion in going down a hill.
- The outer cover or tread of a pneumatic tire, especially for an automobile.
- A band of iron or steel, or a ship of wood, fastened to the bottom of the runner of a sleigh, or any vehicle which slides on the snow.
- A pneumatic tire, especially for an automobile.
- A piece of metal designed to be attached to a horse's foot as a means of protection; a horseshoe.
- A protective covering for the foot, with a bottom part composed of thick leather or plastic sole and often a thicker heel, and a softer upper part made of leather or synthetic material. Shoes generally do not extend above the ankle, as opposed to boots, which do.
- Part of a current collector on electric trains which provides contact either with a live rail or an overhead wire (fitted to a pantograph in the latter case).
- A trough-shaped or spout-shaped member, put at the bottom of the water leader coming from the eaves gutter, so as to throw the water off from the building.
- The part of a railroad car brake which presses upon the wheel to retard its motion.
- An iron socket or plate to take the thrust of a strut or rafter.
- A device for holding multiple decks of playing cards, allowing more games to be played by reducing the time between shuffles.
- A plate, or notched piece, interposed between a moving part and the stationary part on which it bears, to take the wear and afford means of adjustment; called also slipper and gib.
- An inclined trough in an ore-crushing mill.
- An ingot of gold or silver shaped somewhat like a traditional Chinese shoe, formerly used in trade in the Far East.
- A trough or spout for conveying grain from the hopper to the eye of the millstone.
- Something resembling a shoe in form, position, or function, such as a brake shoe.
- An iron socket to protect the point of a wooden pile.
verb
noun
noun
- A single movement or thrust of a part (such as a piston) of a machine that moves back and forth; also, the length of this movement.
- One of a series of beats or movements against a resisting medium, by means of which movement through or upon it is accomplished.
- In Unicode: the formal name of the individual horizontal strikethroughs (as in "A̶").
- A flattering or friendly act, comment, etc., done or made to a person to influence them.
- The action of hitting the ball with the bat; a shot.
- A masterful or effective action.
- The oblique, slash, or virgule ("/").
- The movement of an oar or paddle through water, either the pull which actually propels the boat, or a single entire cycle of movement including the pull; also, the manner in which such movements are made; a rowing style.
- A beat or throb, as of the heart or pulse.
- An act of striking with a weapon; a blow.
- A single act of striking at the ball with a club; also, at matchplay, a shot deducted from a player's score at a hole as a result of a handicapping system.
- An act causing hurt or death, especially when seen as divine punishment.
- A point awarded to a player in case of interference or obstruction by the opponent.
- A gesture of assurance given as encouragement; specifically (psychoanalysis) in transactional analysis: a (generally positive) reaction expressed to a person which fulfils their desires or needs.
- A line making up a written character; specifically, a Chinese, Japanese, or Korean character.
- A damaging occurrence, especially if sudden; a blow, a calamity.
- A specific combination of movements of the arms and legs which, when repeated, causes the swimmer to advance through the water; also, the manner in which such movements are made; a swimming style.
- A movement of a brush in painting, of a chisel in carving, of a pen, pencil, or such implement in drawing or writing, etc., in one direction; hence, a line or mark made on a surface by such an implement.
- The hitting of a ball with a racket; also, the movement of the racket and arm that produces that impact.
- An act of hitting; a blow, a hit.
- An act, or the sound, of the clapper or hammer of a clock hitting a bell or other striking mechanism; hence, the time when such a strike occurs.
- An act of moving one's hand or an object along a surface in one direction, touching it lightly; a caress.
- A thrust of the penis during sexual intercourse.
- A single movement with a tool; also, an impact of a tool on an object.
- The loss of brain function arising when the blood supply to the brain is suddenly interrupted.
- An amount of work; specifically, a large amount of business or work.
- A distinctive expression in a written composition; a touch.
- A powerful or sudden effort by which something is done or produced; also, something accomplished by such an effort; an achievement, a feat.
- The rower who is nearest the stern of the boat, the movement of whose oar sets the rowing rhythm for the other rowers; also, the position in the boat occupied by this rower.
- An individual discharge of lightning, particularly if causing damage.
verb
- To move one's hand or an object (such as a broom or brush) along (a surface) in one direction, touching it lightly; to caress.
- Chiefly followed by out: to suffer loss of brain function when the blood supply to the brain is suddenly interrupted; to have a stroke (noun sense 4).
- Followed by out or through: to draw a line or lines through (text) to indicate that it is deleted; to cancel, to strike or strike out.
- To strike (the water) with one's arms and legs when swimming.
- To swim by making co-ordinated movements with the arms and legs.
- To give assurance to (someone) through encouragement.
- To give a finely fluted surface to (stone) by carving it with a tool.
- To milk (a cow or other animal); especially, to squeeze the teat of (a cow, etc.) to extract the last bit of milk from the udder; to strap (dialectal), to strip.
- Of a rower or a crew: to row at (a rate of a certain number of strokes (“movements of the oar through water”) per minute).
- To draw the horizontal line across the upright part (of the letter t).
- To bring (something) to a certain condition by stroking (sense 1).
- To influence (someone) by convincing or flattering them.
- To act as the stroke (“rower who is nearest the stern of the boat, the movement of whose oar sets the rowing rhythm for the other rowers”) of (a boat or its crew).
- To mark (something) with lines or stripes; to stripe.
- To hit or kick (the ball) with a flowing or smooth motion; also, to score (a goal, a point, etc.) by doing so.
- Of a bell or clock: to chime or sound to indicate (the hour, the time, etc.).
noun
- A pedal causing the vehicle to accelerate when it is pressed.
- A computer component using dedicated hardware to accelerate the processing and display of graphics.
- A muscle or nerve that speeds the performance of an action.
- An accelerator key.
- A device for causing acceleration.
- A device that accelerates charged subatomic particles; a particle accelerator.
- A light van to take mails between a post office and a railway station.
- One who, or that which, accelerates.
- A substance which speeds up chemical reactions.
- A chemical that reduces development time.
noun
- The forward motion of the material fed into a machine.
- The part of a machine that supplies the material to be operated upon.
- Something supplied continuously.
- Food given to (especially herbivorous) non-human animals.
- A meal.
- A gathering to eat, especially in large quantities.
- Encapsulated online content, such as news or a blog, that can be subscribed to.
- A straight man who delivers lines to the comedian during a performance.
verb
- To graze; to cause to be cropped by feeding, as herbage by cattle.
- To give to a machine to be processed.
- To create the environment where another phonological rule can apply; to be applied before another rule.
- To create the syntactic environment in which another syntactic rule is applied; to be applied before another syntactic rule.
- To supply with something.
- To pass to.
- To satisfy, gratify, or minister to (a sense, taste, desire, etc.).
- To give (someone or something) food to eat.
- To eat (usually of animals).
- To give (someone or something) to (someone or something else) as food.
noun
- The drive wheel in any kind of machinery.
- The path taken by electrons from a cloud to ground level, determining the shape of a bolt of lightning.
- One who leads a political party or group of elected party members; sometimes used in titles.
- One having authority to direct.
- A performer who leads a band, choir, or a section of an orchestra.
- The dominant animal in a pack of animals, such as wolves or lions.
- an animal placed in advance of others, especially on a team of horse, oxen, or dogs
- Either of the two front horses of a team of four in front of a carriage.
- A person or organization that leads in a certain field in terms of excellence, success, etc.
- A loss leader or a popular product sold at a normal price.
- The first violin in a symphony orchestra; the concertmaster.
- A branch or small vein, not important in itself, but indicating the proximity of a better one.
- A type having a dot or short row of dots upon its face.
- A fast-growing terminal shoot of a woody plant.
- Any person who leads or directs.
- Someone or something that leads or conducts.
- One who goes first.
- A pipe for conducting rain water from a roof to a cistern or to the ground.
- A net for leading fish into a pound, weir, etc.
- The first, or the principal, editorial article in a newspaper; a leading or main editorial article; a lead story.
- A section of line between the main fishing line and the snell of a hook, intended to be more resistant to bites and harder for a fish to detect than the main fishing line.
- A piece of material at the beginning or end of a reel or roll to allow the material to be threaded or fed onto something, as a reel of film onto a projector or a roll of paper onto a rotary printing press.
- A block of hard wood pierced with suitable holes for leading ropes in their proper places.
- A row of dots, periods, or hyphens, used in tables of contents, etc., to lead the eye across a space to the right word or number.
noun
- The gear mechanism in a motor vehicle.
- In violin-playing, any position of the left hand except that nearest the nut.
- A change of workers, now specifically a set group of workers or period of working time.
- An instance of the use of such a code or character.
- The act of kissing passionately.
- A type of women's undergarment of dress length worn under dresses or skirts, a slip or chemise.
- A bit shift.
- The extent, or arrangement, of the overlapping of plank, brick, stones, etc., that are placed in courses so as to break joints.
- A breaking off and dislocation of a seam; a fault.
- A mutation in which the DNA or RNA from two different sources (such as viruses or bacteria) combine.
- A period of time in which one's consciousness resides in another reality, usually achieved through meditation or other means.
- An act of shifting; a slight movement or change.
- A control code or character used to change between different character sets.
- An infield shift.
- A simple straight-hanging, loose-fitting dress.
verb
- To change position.
- To manipulate a binary number by moving all of its digits left or right; compare rotate.
- To move the keys of a typewriter over in order to type capital letters and special characters.
- In violin-playing, to move the left hand from its original position next to the nut.
- To dispose of.
- To practice indirect or evasive methods.
- To remove the first value from an array.
- To change gears (in a car).
- To hurry; to move quickly.
- To change the reality one's consciousness resides in through meditation or other means.
- To move from one place to another; to redistribute.
- To change in form or character; switch.
- To change residence; to leave and live elsewhere.
- To switch to a character entry mode for capital letters and special characters.
- To engage in sexual petting.
noun
- a pedal that controls the throttle valve
- the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container
- a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
- a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
- a state of excessive gas in the alimentary canal
- a fossil fuel in the gaseous state; used for cooking and heating homes
verb
noun
- a pedal that controls the throttle valve
- a weapon that discharges a missile at high velocity (especially from a metal tube or barrel)
- large but transportable armament
- a person who shoots a gun (as regards their ability)
- a professional killer who uses a gun
- a hand-operated pump that resembles a pistol; forces grease into parts of a machine
- the discharge of a firearm as signal or as a salute in military ceremonies
verb
noun
verb
noun
- The differential gear in an automobile, etc.
- One of two coils of conducting wire so related to one another or to a magnet or armature common to both, that one coil produces polar action contrary to that of the other.
- A form of conductor used for dividing and distributing the current to a series of electric lamps so as to maintain equal action in all.
- An infinitesimal change in a variable, or the result of differentiation.
- A qualitative or quantitative difference between similar or comparable things.
adj
noun
- Any machine or machine part moving in a pecking fashion
- Someone who or something that pecks, striking or piercing in the manner of a bird's beak or bill
- A kind of V-shaped telegraphic relay.
- A bird, particularly a member of the group including the woodpeckers, flowerpeckers, oxpeckers, and berrypeckers.
- Any tool used in a pecking fashion, particularly kinds of hoes or pickaxes.
- A penis; cock, dick.
- Spirits, nerve, courage.
- A nose.
- A bird's beak or bill.
noun
- A motion as of something moving upon little wheels or rollers; a rolling motion.
- A low bed on wheels that can be rolled underneath another bed.
- The sound made by an object being moved on wheels.
- A spool of golden thread.
- A lantern wheel, or one of its bars.
verb
- To move (something or someone), often heavily or clumsily.
- To transport (something or someone) using an object on wheels, especially one that is pushed.
- To roll or revolve; to roll along.
- To move heavily (on wheels).
- To cause (something) to roll or revolve; to roll (something) along.
- To wheel or roll (an object on wheels), especially by pushing, often slowly or heavily.
- To move, often heavily or clumsily.
noun
- Any piece of machinery that pulls something.
- A vehicle used in farms e.g. for pulling farm equipment and preparing the fields.
- A truck (or lorry) for pulling a semi-trailer or trailer.
- An aeroplane where the propeller is located in front of the fuselage.
- A British Rail Class 37 locomotive.
- A movable coop without a floor to allow for free ranging.
verb
English words for 'A transfer of motion occurring within a gearbox.'
As you may have noticed, above you will find words for "A transfer of motion occurring within a gearbox.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.
Recent Queries
new disciple
cosmos
as I see it
taking the initiative
usually with reference to substance use.
Below the eye
comb-over
deaf-mute
resident in South Korea
teachings of Buddha
absolute temperature
perfected
heterozygote
creative originality
A town in Maine, United States
To light up
to go off the rails
body weight
without tears.
inattentive
to accord
musical play
watering at the mouth
triceps
to unmask
maintainability
predominantly.
badgers
tidy.
corrugated
foster parents
topical
pensioner
servility
phonetic symbol
kitchen work
to make a name for oneself
narration
To worry
flexure
to eradicate
to argue.
good deed
afforestation
to cure
habitual
pure.
village
same
vacillation