I. “+ adjective
Etymology: co- + dominant
1. of trees : forming part of the main canopy of a forest — compare dominant
2. of kinds of organisms : sharing in the controlling influence of a biotic community : present in equal and highest frequency with some other kind of organism
a forest in which spruce and fir are codominant
II. noun
( -s )
: a codominant individual or kind of organism ; especially : a codominant plant
III. adjective
: being fully expressed in the heterozygous condition
codominant alleles