car·i·nate I. \ˈkarəˌnāt, -_nə̇t\adjective alsocar·i·nat·ed\-ˌnād.ə̇d\ Etymology: Latin carinatus, from carina keel + -atus -ate : shaped like the keel or prow of a ship : keeled, ridged < a carinate sepal > < a carinate scale > — compare ratite II. noun (-s) Etymology: New Latin Carinatae : a bird with a keeled breastbone : one of the Carinatae