costate
/ˈkɒsteɪt
/adjective Botany & Zoology
Ribbed; possessing a costa.Lateral slopes are weakly costate; the costae are diminished and almost invisible....
- All are radially costate, with costae varying from simple and evenly distributed to variously branched and unevenly spaced.
- Early genera were almost circular to elongate-oval, with smooth or finely costate shells.
Origin
Early 19th century: from Latin costatus, from costa 'rib'.
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