What is another word for carboxyl?
Pronunciation: [kˈɑːbəksˌɪl] (IPA) 
Carboxyl is a functional group found in organic compounds. It is the combination of a carbonyl group and a hydroxyl group, represented as -COOH. Synonyms for carboxyl include carboxylic acid, carboxylate, and carboxylic group. Carboxylic acids are compounds that contain at least one carboxyl group. Carboxylates are salts or esters of carboxylic acids. Carboxylic group is a term sometimes used to refer to the -COOH group in a molecule. These terms play an important role in organic chemistry and in biochemistry, as they are present in many important molecules such as amino acids, fatty acids, and nucleic acids.
