NO2

5 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  nitro- \ni"tro-\pref.
     1. A combining form or an adjective denoting the presence of
        niter.
        [1913 Webster]
  
     2. (Chem.) A combining form (used also adjectively)
        designating certain compounds of nitrogen or of its acids;
        as nitrohydrochloric, nitrocalcite; also, designating the
        group or radical {NO2}, or its compounds, as nitrobenzene
        ({C6H5.NO2}).
        [1913 Webster]
  
     {Nitro group}, the radical {NO2}; -- called also {nitroxyl}.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Nitrite \Ni"trite\, n. [Cf. F. nitrite. See {Niter}.] (Chem.)
     A salt or ester of nitrous acid; a compound bearing the
     {-NO2} radical.
     [1913 Webster +PJC]
  
     {Amyl nitrite}, a yellow oily volatile liquid, used in
        medicine as a depressant and a vaso-dilator. Its
        inhalation produces an instantaneous flushing of the face.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Nitroxyl \Ni*trox"yl\, n. [Nitro- + oxygen + -yl.] (Chem.)
     The group {-NO2}, usually called the {nitro group}.
     [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Chromophore \Chro"mo*phore\, n. [Gr. ? color + fe`rein to bear.]
     (Chem.)
     Any chemical group or residue (as {NO2}; {N2}; or {O2}) which
     imparts some decided color to the compound of which it is an
     ingredient.
     [1913 Webster]