Definition of aspartic acid in English:

aspartic acid


  • An acidic amino acid which is a constituent of most proteins, and also occurs in sugar cane. It is important in the metabolism of nitrogen in animals, and also acts as a neurotransmitter.

    Chemical formula: COOHCH₂CH(NH₂)COOH

    ‘Infusion of the amino acids lysine and arginine, but not aspartic acid or glutamic acid, have been shown to stimulate the release of insulin in horses.’
    • ‘Carefully read food labels to see where you might be unknowingly ingesting aspartame; manufacturers sometimes list it as its components, the amino acids aspartic acid and phenylalanine.’
    • ‘Aspartame is an odorless, white crystalline powder derived from two amino acids, aspartic acid and phenylalanine.’
    • ‘Aspartame, a dipeptide of aspartic acid and a methyl ester of phenylalanine, is 200 times sweeter than sugar.’
    • ‘The aspartic acid in aspartame excites brain cells, some say to a dangerous level.’


aspartic acid

/əˌspärdik ˈasəd/ /əˌspɑrdɪk ˈæsəd/


Mid 19th century aspartic from French aspartique, formed arbitrarily from Latin asparagus (see asparagus).