資料來源 : Webster's Revised Unabridged Dictionary (1913)

Bigeminate \Bi*gem"i*nate\, a. [Pref. bi- + geminate.] (Bot.)
   Having a forked petiole, and a pair of leaflets at the end of
   each division; biconjugate; twice paired; -- said of a
   decompound leaf.