'Didynamia' definitions:

Definition of 'Didynamia'

From: GCIDE

Didynamia \Did`y*na"mi*a\, n. pl. [NL., fr. Gr. di- = di`s- twice + ? power.] (Bot.) A Linn[ae]an class of plants having four stamens disposed in pairs of unequal length. [1913 Webster]