HELIUM
\hˈiːli͡əm], \hˈiːliəm], \h_ˈiː_l_iə_m]\
Definitions of HELIUM
- 2010 - New Age Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 2010 - Medical Dictionary Database
- 1919 - The Winston Simplified Dictionary
- 1919 - The Concise Standard Dictionary of the English Language
- 1898 - American pocket medical dictionary
- 1916 - Appleton's medical dictionary
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An inert, monoatomic, gaseous element occurring in the atmosphere of the sun and stars, and in small quantities in the earth's atmosphere, in several minerals and in certain mineral waters. Symbol, He; at. wt., 4. Helium was first detected spectroscopically in the sun by Lockyer in 1868; it was first prepared by Ramsay in 1895. Helium has a density of 1.98 compared with hydrogen, and is more difficult to liquefy than the latter. Chemically, it belongs to the argon group and cannot be made to form compounds. It is a decomposition product of the radium emanation.
By Oddity Software
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An inert, monoatomic, gaseous element occurring in the atmosphere of the sun and stars, and in small quantities in the earth's atmosphere, in several minerals and in certain mineral waters. Symbol, He; at. wt., 4. Helium was first detected spectroscopically in the sun by Lockyer in 1868; it was first prepared by Ramsay in 1895. Helium has a density of 1.98 compared with hydrogen, and is more difficult to liquefy than the latter. Chemically, it belongs to the argon group and cannot be made to form compounds. It is a decomposition product of the radium emanation.
By Noah Webster.
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Helium. A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics. (Dorland, 27th ed)
By DataStellar Co., Ltd
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An element first observed in the spectrum of the sun, but recently discovered on the earth and some of its characteristics learned; a gaseous element found in the atmospheres of the sun and earth and in some rare minerals; a product yielded by one of the gases from radium, which it resembles.
By William Dodge Lewis, Edgar Arthur Singer
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A chemical element first inferred from lines in the spectrum to exist in the sun, now found on the earth.
By James Champlin Fernald
By Willam Alexander Newman Dorland
