'COH2' definitions:

Definition of 'COH2'

From: GCIDE

Glyoxal \Gly*ox"al\, n. [Glycol + oxalic + aldehyde.] (Chem.) A white, amorphous, deliquescent powder, (CO.H)2, obtained by the partial oxidation of glycol. It is a double aldehyde, between glycol and oxalic acid. [1913 Webster]