noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The case in which a heterozygote has a higher fitness or more extreme phenotype than either homozygote. uncountable, usually
2. 2
   Excessive dominance. uncountable, usually

Etymology

From over- + dominance.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.