Main Entry: ex·pres·siv·i·ty

Pronunciation: \ˌek-ˌspre-ˈsi-və-tē\

Function: noun

Inflected Form(s): plural ex·pres·siv·i·ties

Date: 1934

1 : the relative capacity of a gene to affect the phenotype of the organism of which it is a part
2 : the quality of being expressive