Chemical combining form

• Acid type
• Chemist's combiner
• Chemical compound: comb. form
• Of an acid group
• Of an organic compound
• Chemical prefix
• ___ yellow E (a dye)

Wiktionary Word definitions in Wiktionary
n. (context organic chemistry English) The univalent radical -NH 2 when attached via a carboxyl group

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Amido \A*mi"do\, a. [From Amide .] (Chem.) Containing, or derived from, amidogen. Amido acid , an acid in which a portion of the nonacid hydrogen has been replaced by the amido group. The amido acids are both basic and acid. Amido group , amidogen, NH2 .