costate, a. Nat. Hist.
(ˈkɒsteɪt)
[ad. L. costātus ribbed, having ribs, f. costa rib: see -ate2 2.]
Having a rib or ribs; ribbed: see costa1.
| 1819 Pantologia, Costate leaf, in botany, a ribbed leaf. 1881 H. B. Brady in Jrnl. Microsc. Sc. Jan. 61 The body of the shell strongly costate. |