Diadelphian

{ Di′a‐del″phi‐an (?), Di′a‐del″phous (?), } a. [Cf. F. diadelphe.] (Bot.) 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).