hydrogen line
Humphreys series
Pfund series
hydrohalic
Paschen series
Brackett series
monoprotic
hydrogen atom
hydroiodic
Balmer series
monoprotonated
hydrogen ion
upscattering
hydrogen spectral series
ultraviolet C
LINER
microsievert
protium
Lyman series
line
millisievert
hydrogenosomal
ultrashort
double-stranded
hyperfine structure
hydrogenotrophically
hydrogenic
monohydride
hexahydro
hexahydride
monohalogenated
hydrogen-bonded
hydrogen spectrum
hydriodic acid
hydridic
NLRG
hydrodimerization
radiospectrometry
hydrogenous
metallic hydrogen
pentavalent
Bohr
electron number
λmax
Niels Bohr
quinquivalent
proton number
radioconcentration
Niels Henrik David Bohr
benzene formula
benzene nucleus
benzene ring
Kekule formula
short wave
longwards
WLRG
waterhole
pentabasic
trihydride
atomic number 113
Uut
BLRG
monohydric
tetrahydride
hydronation
octadecyl
Bohr radius
deuterium
hydroaromatic
ununtrium
hydro-
element 113
hydrogenously
infrared
anapole
waterstuff
quantum limit
radiophysics
radiopure
homochromatic
inflammable air
tetrabasic
nuclear physics
tetravalent
heptabasic
monochromatic
milligray
atomic physics
nucleonics
raie ultime
gamma ray
spectral line
tetraradical
iodonium ion
oxyhydrogen
gastrografin
gravitational redshift
polyhalogeno
gamma radiation

English words for 'a spectral line of atomic hydrogen having a wavelength of about 21cm; used extensively in radio astronomy'

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