Nitric oxide
Nitric Ni"tric, a. [Cf. F. nitrique. See {Niter}.] (Chem.) Of, pertaining to, or containing, nitrogen; specifically, designating any one of those compounds in which, as contrasted with {nitrous} compounds, the element has a higher valence; as, nitric oxide; nitric acid. [1913 Webster]

{Nitric acid}, a colorless or yellowish liquid obtained by distilling a nitrate with sulphuric acid. It is powerfully corrosive, being a strong acid, and in decomposition a strong oxidizer.

{Nitric anhydride}, a white crystalline oxide of nitrogen ({N2O5}), called {nitric pentoxide}, and regarded as the anhydride of nitric acid.

{Nitric oxide}, a colorless poisous gas ({NO}) obtained by treating nitric acid with copper. On contact with the air or with oxygen, it becomes reddish brown from the formation of nitrogen dioxide ({NO2}, also called nitric dioxide or nitric peroxide). [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • nitric oxide — n. a colorless gas, NO, prepared by the action of nitric acid on copper or directly from the air by various processes …   English World dictionary

  • Nitric oxide — Not to be confused with nitrous oxide or nitrogen oxides. For other uses, see NO (disambiguation). Nitric oxide …   Wikipedia

  • nitric oxide — Chem. a colorless, slightly water soluble gas, NO, formed by the action of dilute nitric acid on copper, and by the direct combination of atmospheric oxygen and nitrogen at the high temperatures of an electric arc: an intermediate in the… …   Universalium

  • nitric oxide — A colorless, radical free gas that reacts rapidly with O2 to form other nitrogen oxides (e.g., NO2, N2O3, and N2O4) and ultimately is converted to nitrite (NO2−) and nitrate (NO3−); a gaseous mediator of cell to cell communication and …   Medical dictionary

  • nitric oxide — (= endothelium derived relaxation factor;EDRF; NO) Gas produced from L arginine by the enzyme nitric oxide synthase. Acts as an intracellular and intercellular messenger in a wide range of processes, in the vascular and nervous systems. The… …   Dictionary of molecular biology

  • nitric oxide — an important member of the group of gaseous mediators, which – together with amine mediators (e.g. adrenaline, noradrenaline, histamine, acetylcholine) and lipid mediators (e.g. prostaglandins) – produce many physiological responses (e.g. smooth… …   The new mediacal dictionary

  • nitric oxide — azoto oksidas statusas T sritis ekologija ir aplinkotyra apibrėžtis Azoto junginys su deguonimi: N₂O, NO, NO₂, N₂O₃, N₂O₄, N₂O₅. atitikmenys: angl. nitric oxide; nitrogen monoxide vok. Stickoxid, n; Stickstoffmonoxid, n rus. окись азота, f …   Ekologijos terminų aiškinamasis žodynas

  • nitric oxide — /naɪtrɪk ˈɒksaɪd/ (say nuytrik oksuyd) noun an oxide of nitrogen, NO, formed when copper is treated with dilute nitric acid …   Australian English dictionary

  • nitric oxide — noun Chemistry a colourless toxic gas made by reduction of nitric acid, reacting immediately with oxygen to form nitrogen dioxide. [NO.] …   English new terms dictionary

  • nitric oxide — ni′tric ox′ide n. chem. a colorless, slightly water soluble gas, NO, an intermediate in the manufacture of nitric acid • Etymology: 1800–10 …   From formal English to slang

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