Толковый словарь английского языка - nitrogen
Nitrogen
nitrogen
noun Usage: often attributive Etymology: French nitrogène, from nitre niter + -gène -gen Date: 1794 a colorless tasteless odorless element that as a diatomic gas is relatively inert and constitutes 78 percent of the atmosphere and that is a constituent of organic compounds found in all living tissues, ~ous adjective
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1.
n. Chem. a colourless tasteless odourless gaseous element that forms four-fifths of the atmosphere and is an essential constituent of proteins and nucleic acids. Usage Symb.: N. Phrases and idioms nitrogen cycle the interconversion of nitrogen and its compounds, usu. in the form of nitrates, in nature. nitrogen fixation a chemical process in which atmospheric nitrogen is assimilated into organic compounds in living organisms and hence into the nitrogen cycle. Derivatives nitrogenous adj. Etymology: F nitrog{egrave}ne (as NITRO-, -GEN) ...Толковый словарь английского языка Oxford English Reference
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