Word Study
costate
CIDE DICTIONARY
costate, a. [L. costatus, fr. costa rib.].
Having ribs, or the appearance of ribs; (Bot.) having one or more longitudinal ribs. [1913 Webster]
OXFORD DICTIONARY
costate, adj. ribbed; having ribs or ridges.
Etymology
L costatus f. costa rib
ROGET THESAURUS
costate
Furrow
N furrow, groove, rut, sulcus, scratch, streak, striae, crack, score, incision, slit, chamfer, fluting, corduroy road, cradle hole, channel, gutter, trench, ditch, dike, dyke, moat, fosse, trough, kennel, ravine, tajo, thank-ye-ma'am, furrowed, ribbed, striated, sulcated, fluted, canaliculated, bisulcous, bisulcate, bisulcated, canaliferous, trisulcate, corduroy, unisulcate, costate, rimiform.For further exploring for "costate" in Webster Dictionary Online