Entry 1 sense Webster, 1913 Seminific · Sem·i·nif·ic · IPA /ˌsɛm.ɪˈnɪf.ɪk/ 01 a. Forming or producing seed, or the male generative product of animals or of plants. 1. Forming or producing seed, or the male generative product of animals or of plants.(Biol.)