noun Biochemistry.
  1. 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.
Compare levodopa.

Origin of dopa

< German Dopa (1917), contraction of 3, 4- Dioxyphenylanin; see di-1, oxy-2, phenylalanine Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for dopa


  1. See L-dopa
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

dopa in Medicine


  1. Dihydroxyphenylalanine; an amino acid formed in the liver from tyrosine and converted to dopamine in the brain.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.