trans·am·i·na·tion \(ˌ) ̷ ̷ˌ ̷ ̷ ̷ ̷ˈnāshən\noun Etymology:trans- + amination : a reversible oxidation-reduction reaction in which an amino group is transferred typically from an alpha-amino acid to the carbonyl carbon atom of an alpha-keto acid and which is usually promoted by a transaminase < the transamination of glutamic acid in the presence of pyruvic acid yields alpha-ketoglutaric acid and alanine >