| Title | helium |
|---|---|
| Text |
Merriam-Webster's Collegiate Dictionary he·li·um ETYMOLOGY New Latin, from Greek hēlios DATE 1872 : a light colorless inert gaseous element found especially in natural gases and used chiefly for inflating airships and balloons, in lamps, in cryogenic research, and as a component of inert atmospheres (as in welding) — see element tableEnglish Etymology helium 1868, coined from Gk. helios "sun" (see sol), because the element was observed in the solar spectrum during the eclipse of Aug. 18, 1868, by Eng. astronomer Sir Joseph N. Lockyer (1836-1920) and Eng. chemist Sir Edward Frankland (1825-99). It was not actually obtained until 1895. Oxford Advanced Learner's Dictionary-牛津双解-OALD7 helium he·lium / 5hi:liEm / noun[U] (symb He) a chemical element. Helium is a very light gas that does not burn, often used to fill balloons and to freeze food. 氦；氦气 Webster's Third New International Dictionary, Unabridged he·li·um \ˈhēlēəm\ noun (-s) Usage: often attributive Etymology: New Latin, from Greek hēlios sun + New Latin -ium — more at solar : a very light colorless inert gaseous element that is the most difficult of all gases to liquefy, that occurs throughout the universe but in economically extractable amounts only in certain natural gases (as in the Texas panhandle and Kansas), and that is used chiefly in inflating airships and balloons, in arc welding and other metallurgical and chemical processes as an inert gaseous shield, and in diluting oxygen for breathing (as by patients with respiratory ailments and by divers) — symbol He; see alpha particle; element table |
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