Amido formic acid

Formic \For"mic\, a. [L. formica an ant: cf. F. formique.]
   (Chem.)
   Pertaining to, or derived from, ants; as, formic acid; in an
   extended sense, pertaining to, or derived from, formic acid;
   as, formic ether.
   [1913 Webster]

   {Amido formic acid}, carbamic acid.

   {Formic acid}, a colorless, mobile liquid, {HCO.OH}, of a
      sharp, acid taste, occurring naturally in ants, nettles,
      pine needles, etc., and produced artifically in many ways,
      as by the oxidation of methyl alcohol, by the reduction of
      carbonic acid or the destructive distillation of oxalic
      acid. It is the first member of the fatty acids in the
      paraffin series, and is homologous with acetic acid.
      [1913 Webster]
    

Carbamic \Car*bam"ic\ (k[aum]r*b[a^]m"[i^]k), a. [Carbon +
   amido.] (Chem.)
   Pertaining to an acid so called.
   [1913 Webster]

   {Carbamic acid} (Chem.), an amido acid, {H2N.CO2.H}, not
      existing in the free state, but occurring as a salt of
      ammonium in commercial ammonium carbonate; -- called also
      {amido formic acid}.
      [1913 Webster]