Толковый словарь английского языка Oxford English Reference - oxygen
Oxygen
oxygen
n. Chem. a colourless tasteless odourless gaseous element, occurring naturally in air, water, and most minerals and organic substances, and essential to plant and animal life. Usage Symb.: O. Phrases and idioms oxygen mask a mask placed over the nose and mouth to supply oxygen for breathing. oxygen tent a tentlike enclosure supplying a patient with air rich in oxygen. Derivatives oxygenous adj. Etymology: F oxyg{egrave}ne acidifying principle (as OXY- 2): it was at first held to be the essential principle in the formation of acids
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noun Usage: often attributive see: edge Date: 1788 a reactive element that is found in water, in most rocks and minerals, in numerous organic compounds, and as a colorless tasteless odorless diatomic gas constituting 21 percent of the atmosphere, that is capable of combining with all elements except the inert gases, that is active in physiological processes, and that is involved especially in combustion, something that sustains or fuels , ~less adjective ...Толковый словарь английского языка
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