'Costate' definitions:
Definition of 'costate'
From: WordNet
adjective
(of the surface) having a rough, riblike texture [syn: costate, ribbed]
adjective
Having ribs
Definition of 'Costate'
From: GCIDE
- Costate \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. [1913 Webster]