BITERNATE
a.[L. bis and ternus, three. ] In botany, doubly ternate, as when a petiole has three ternate leaflets.
Bi *ter "nate, a. Etym: [Pref. bi- + ternate. ] (Bot. )
biternate
biternate |bʌɪˈtəːneɪt | ▶adjective Botany (especially of a ternate leaf ) having leaflets or other parts that are further subdivided in a ternate arrangement.