noun Biochemistry.
- an amino acid, C9H11NO4, formed from tyrosine in the liver during melanin and epinephrine biosynthesis: the L-dopa isomer is converted in the brain to dopamine.
noun
- See L-dopa
n.
- Dihydroxyphenylalanine; an amino acid formed in the liver from tyrosine and converted to dopamine in the brain.