D defs.my
Entry 1 sense Webster, 1913

Diadelphian

· Di·a·del·phi·an · IPA
01 a. Of or pertaining to the class Diadelphia; having the stamens united into two bodies by their filaments (said of a plant or flower); grouped…
  1. 1.
    Of or pertaining to the class Diadelphia; having the stamens united into two bodies by their filaments (said of a plant or flower); grouped into two bundles or sets by coalescence of the filaments (said of stamens).(Bot.)