Nitrogen
Nitrogen Ni`tro*gen (n[imac]"tr[-o]*j[e^]n), n. [L. nitrum natron + -gen: cf. F. nitrog[`e]ne. See {Niter}.] (Chem.) A colorless nonmetallic element of atomic number 7, tasteless and odorless, comprising four fifths of the atmosphere by volume in the form of molecular nitrogen ({N2}). It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name {azote} still used by French chemists); but it forms many important compounds, such as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organized living tissues, animal or vegetable. Symbol N. Atomic weight 14.007. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of Paris, and Pictet of Geneva, and boils at -195.8 [deg] C at atmospheric pressure. Liquid nitrogen is used as a refrigerant to store delicate materials, such as bacteria, cells, and other biological materials. [1913 Webster +PJC]

The Collaborative International Dictionary of English. 2000.

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  • nitrogen — s.m. (chim.) Azot. – Din fr. nitrogène. Trimis de cata, 21.02.2002. Sursa: DEX 98  NITROGÉN s. v. azot. Trimis de siveco, 13.09.2007. Sursa: Sinonime  nitrogén s. m. (sil. tro ); simb. N …   Dicționar Român

  • nitrogen — Symbol: N Atomic number: 7 Atomic weight: 14.0067 Colourless, gaseous element which belongs to group 15 of the periodic table. Constitutes nitrogen78% of the atmosphere and is an essential part of the ecosystem. Nitrogen for industrial purposes… …   Elements of periodic system

  • Nitrogen — (kvælstof) er et grundstof med atomnummer 7 i det periodiske system. Farveløs gas, findes blandt andet i Jordens atmosfære som frit N2 molekyle …   Danske encyklopædi

  • nitrogen — (n.) 1794, from Fr. nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756 1832), from comb. form of Gk. nitron sodium carbonate (see NITRO (Cf. nitro )) + Fr. gène producing, from Gk. gen giving birth to (see GEN (Cf. gen)). The gas …   Etymology dictionary

  • nitrogen — nȉtrogēn m DEFINICIJA kem., v. dušik ETIMOLOGIJA nitro + gen …   Hrvatski jezični portal

  • nitrogen — ► NOUN ▪ a colourless, odourless, relatively unreactive gaseous chemical element, forming about 78 per cent of the earth s atmosphere. DERIVATIVES nitrogenous adjective …   English terms dictionary

  • nitrogen — [nī′trə jən] n. [Fr nitrogène: so named (1790) by J. A. Chaptal (1756 1832), Fr chemist < Gr nitron (see NITER) + Fr gène, GEN, because niter resulted when it was sparked with oxygen in the presence of caustic potash] a colorless, tasteless,… …   English World dictionary

  • Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …   Wikipedia

  • nitrogen — /nuy treuh jeuhn/, n. Chem. a colorless, odorless, gaseous element that constitutes about four fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, esp. in proteins: used chiefly in the… …   Universalium

  • nitrogen — 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… …   Useful english dictionary

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