didynamy Bot.
(daɪˈdɪnəmɪ, dɪd-)
[f. prec. + -y: cf. autonomous, autonomy.]
Didynamous condition or structure.
| 1830 Lindley Nat. Syst. Bot. 234 The didynamy of Acanthaceæ is frequently different from that of Scrophularineæ in the posterior pair of stamens being the longest. |