Dĭd'y-nā'mi-ă, n.

noun

n. [Gr. δι, for δις, twice, double, and δύναμις, power, strength; Fr. didynamie. See DYNAMIC.] (Bot.) A class of plants in the Linnean system, characterized by having four stamens disposed in pairs of unequal length.

A botanical drawing of a flower cut open to show its internal reproductive structures.