Source : Webster's Revised Unabridged Dictionary (1913)

Bilobate \Bi*lo"bate\ (b[-i]*l[=o]"b[asl]t or
   b[imac]"l[-o]*b[asl]t), a. [Pref. bi- + lobate.]
   Divided into two lobes or segments.

Source : WordNet®

bilobate
     adj 1: divided into two lobes [syn: {bilobated}, {bilobed}]
     2: having two lobes; "a bilobate leaf" [syn: {bilobated}, {bilobed}]