Found 1 items, similar to HCO.
English → English (gcide) Definition: HCO Formyl \For"myl\, n. [Formic + -yl.] (Chem.) (a) A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde. (b) Formerly, the radical methyl, CH3. [1913 Webster]