instaminate,a.Bot.|ɪnˈstæmɪnət| [ad.mod.L. instaminātus: see in-3 and staminate.] Not staminate; not having stamens. 1855Mayne Expos.Lex., Instaminatus, applied by H. Cassini to the corol in the Synanthereæ, when it is not accompanied by perfect male organs: instaminate.1886in Syd. Soc.Lex.