a. Bot. [f. BI- pref.2 1 + CARINATE, f. L. carīna keel.] Furnished with two keels or axial ridges. So Bicarinated.
1872. Oliver, Elem. Bot., App. 310. The pale … bicarinate with inflexed margins.
1880. Jrnl. Linn. Soc., XV. 226. Shell … conical, with bicarinated contracted whorls.
