C2O2

1 definition found

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

  Oxalyl \Ox"a*lyl\, n. [Oxalic + -yl.] (Chem.)
     (a) A hydrocarbon radical ({C2O2}) regarded as a residue of
         oxalic acid and occurring in derivatives of it.
     (b) An old name for {carbonyl}.
     (c) An old name for {carboxyl}.
         [1913 Webster]