{ } a. [ Pref. bi- + pinnate; cf. F. bipinné. Cf. Bipennate. ] Twice pinnate. [ 1913 Webster ]
a. [ Pref. bi- + pinnatifid. ] (Bot.) Doubly pinnatifid. [ 1913 Webster ]
A bipinnatifid leaf is a pinnatifid leaf having its segments or divisions also pinnatifid. The primary divisions are pinnæ and the secondary pinnules. [ 1913 Webster ]