n. Chem. a colourless light inert gaseous element occurring in deposits of natural gas, used in airships and as a refrigerant. °Symb.: He.
[ Gk helios sun (having been first identified in the sun's atmosphere) ]
n. Chem. a colourless light inert gaseous element occurring in deposits of natural gas, used in airships and as a refrigerant. °Symb.: He.
[ Gk helios sun (having been first identified in the sun's atmosphere) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012