Bigeminate :: Bigeminate (a.) Having a forked petiole, and a pair of leaflets at the end of each division; biconjugate; twice paired; -- said of a decompound leaf..
Tergeminate :: Tergeminate (a.) Thrice twin; having three pairs of leaflets.
Trigeminal :: Trigeminal (a.) Of, pertaining to, or designating, the fifth pair of cranial nerves, which divide on each side of the head into three main branches distributed to the orbits, jaws, and parts of the mouth; trifacial..