1Having a keellike ridge.
- ‘The bluffs above the swamp are the only known home of the carinate pill snail, a species once thought extinct.’
- 1.1(of a bird) having a deep ridge on the breastbone for the attachment of flight muscles.Contrasted with ratite
- ‘Fossils of volant paleoganthous carinate birds from the Paleocene and Eocene appear phenetically most similar to tinamiform birds.’
- ‘The story of Mesozoic birds became complicated by the discovery in 1985, by Russian colleague Evgeny Kurochkin, of Ambiortus, a Lower Cretaceous archaic but modern-type ornithurine (carinate) bird with an advanced flight apparatus.’
- ‘Penguins are flightless divers with poorly pneumatized skeleton, carinate sternum with two lateral notches, 15 cervical vertebrae and basipterygoid processes absent.’
Late 18th century: from Latin carinatus having a keel from carina keel.