1. the observed state, description, or degree of expression of a character or trait 2. the product of the interaction of the genes of an organism (genotype) with the environment —note when the total character expressions of an individual are considered, the phenotype describes the individual —see broad-sensed heritability, combining ability, dominance, geographic variation, heritability, heterosis, individual selection, morphology, pleiotropism, seed production area, selection, selection index, superiorThis definition last updated 10/27/2008