a. [f. mod.L. bifoli-us two-leafed (f. BI- + folium leaf) + -ATE.] Having or consisting of two leaves.
1836. Penny Cycl., V. 251.
1870. Bentley, Bot., 164. A leaf is said to be binate, bifoliate, or unijugate, if it consists of only 2 leaflets springing from a common point.
