Definitions for: Costate

[adj] (anatomy) having ribs
[adj] (of the surface of shells) having a rough, rib-like texture

Webster (1913) Definition: Cos"tate (k?s"t?t), Costated Cos"ta*ted (-t?-t?d),
a. [L. costatus, fr. costa rib.]
Having ribs, or the appearance of ribs; (Bot.) having one or
more longitudinal ribs.

Synonyms: ribbed, rough, unsmooth