bipinnate, a.
(baɪˈpɪneɪt)
[ad. mod.L. bipinnātus: see bi- prefix2 3 and pinnate, f. pinna wing.]
1. Doubly or subordinately pinnate; see quot.
| 1794 Martyn Rousseau's Bot. xxi. 301 The leaves are doubly winged or bipinnate. 1872 Oliver Elem. Bot. i. vii. 77 A leaf becomes twice pinnate (bi-pinnate) when the common petiole, instead of bearing leaflets, bears secondary petioles upon which the leaflets are pinnately arranged. |
2. Zool. Having feathery appendages in opposed pairs.
| 1856–8 W. Clark Van der Hoeven's Zool. II. 63 Tail..without spur, bipinnate above. 1868 Wright Ocean World vi. 142 Pennatula..with polypes on bipinnate wings. |