Carbamic acid is the compound with the formula H2NCO2H. The attachment of the acid group to an nitrogen or amine (instead of carbon) distinguishes it from carboxylic acid and an amide. Many derivatives and analogues of carbamic acid are known. They are generally unstable, reverting to the parent amine and carbon dioxide. The deprotonated anion (or...
A hypothetical acid, NH2-COOH, forming carbamates; the acyl radical is carbamoyl. ... (05 Mar 2000) ... 
Type: Term Pronunciation: kar-bam′ik as′id Definitions: 1. A hypothetical acid, NH2—COOH, forming carbamates; the acyl radical is carbamoyl.
[n] - an acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane)
noun an acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane)