Archaeozoic
Age of Man
Quaternary
Quaternary period
tertiary
Tertiary period
Tertiary
Phanerozoic
Phanerozoic eon
Phanerozoic aeon
Cryogenian
Paleolithic
pralaya
submillennial
eon
Ediacaran
Paleozoic era
Paleozoic
Precambrian
cosmic time
Carboniferous period
Carboniferous
Age of Mammals
precivilization
recent
Cenozoic
Cenozoic era
Eratosthenian
Palaeolithic
millennium
millenary
Paleolithic Age
kya
Neoarchean
prespacetime
Orosirian
Miocene
centimillennium
subrecent
Ectasian
Rhyacian
Siderian
Tonian
lower boundary
Recent
Holocene
Calymmian
Pleistocene
Recent epoch
Holocene epoch
Epipaleolithic
Ur
decamillennium
Devonian
Mesolithic Age
Mesolithic
quincentennium
Age of Reptiles
Stennian
Jurassic period
Mesozoic
Jurassic
Mesozoic era
prefossilization
Dreamtime
Archean eon
Middle Stone Age
Archean
Stenian
Archaeozoic aeon
billennial
supercenturial
Archeozoic eon
Archean aeon
Archeozoic
Nectarian
Statherian
millennian
Glacial epoch
paleodata
Pleistocene epoch
paleochronology
Cambrian period
millennial
Cambrian
neolithic
age
geologic time
Paleoproterozoic
geological time
Young Earth creationism
neros
-zoic
Cryogenian
submillennial
Ediacaran
recent
prespacetime
Orosirian
Miocene
subrecent
Ectasian
Rhyacian
Siderian
Tonian
Precambrian
Calymmian
Pleistocene
Devonian
Stennian
billennial
supercenturial
Statherian
millennian
millennial
neolithic
Cambrian
Paleoproterozoic
Age of Man
Quaternary
Quaternary period
tertiary
Tertiary period
Tertiary
Phanerozoic
Phanerozoic eon
Phanerozoic aeon
pralaya
eon
Paleozoic era
Paleozoic
cosmic time
Carboniferous period
Carboniferous
Age of Mammals
precivilization
Cenozoic
Cenozoic era
Paleolithic
Palaeolithic
millennium
millenary
Paleolithic Age
kya
centimillennium
lower boundary
Recent
Holocene
Recent epoch
Holocene epoch
Epipaleolithic
decamillennium
Mesolithic Age
Mesolithic
quincentennium
Age of Reptiles
Jurassic period
Mesozoic
Jurassic
Mesozoic era
prefossilization
Archaeozoic
Archean eon
Archean
Archaeozoic aeon
Archeozoic eon
Archean aeon
Archeozoic
Pleistocene
Glacial epoch
paleodata
Pleistocene epoch
paleochronology
Cambrian period
Cambrian
age
geologic time
geological time
neros
prespacetime
Precambrian
English words for 'Period of time determined to exist prior to 2.5 thousand million years ago.'
As you may have noticed, above you will find words for "Period of time determined to exist prior to 2.5 thousand million years ago.". Hover the mouse over the word you'd like to know more about to view its definition. Click 
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Recent Queries
jurist
neocortex
to bluff.
noble family
Guinea worm disease
to distance oneself (from)
ligase
BRT
precinct
A little bit
far-fetched
to address.
listening attentively
spinning one's wheels
string ensemble
To make Spanish
farming implement
to be mad
autogenic training
Innovative
teacher's pet
to be enthralled
daylight saving time
syntax error
desiccant
stratigraphy
interstellar dust
profane
nuptial
hair loss
torpor
hindsight
fearlessly
unimpressed.
A city in Minnesota, United States
jogging
an item
stubbornness.
to round up
ceiling
to be effective
A mistress
fold
rapture
matter-of-fact
physical examination
hour
good reputation
duplicity
decrease