Pronunciation: (kō-dom'u-nunt), [key]
1. Ecol.being one of two or more species that are equally dominant in a biotic community: a forest in which oak and hickory are codominant.
2. Genetics.of or pertaining to two different alleles that are fully expressed in a heterozygous individual.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.