'Carbamic acid' definitions:

Definition of 'carbamic acid'

(from WordNet)
noun
An acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane)

Definition of 'Carbamic acid'

From: GCIDE
  • 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]