[ kō-dŏm′ə-nənt ]
Relating to two alleles of a gene pair in a heterozygote that are both fully expressed. When alleles for both white and red are present in a carnation, for example, the result is a pink carnation since both alleles are codominant.
Being one of two or more of the most common or important species in an ecological community. Like a dominant species, codominant species often influence the presence and type of other species in the community.
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Examples from the Web for codominants
Next the three most abundant plants other than the dominant and codominants were rated for each station, where possible.