carinate

car·i·nate

 (kăr′ə-nāt′, -nĭt) also car·i·nat·ed (-nā′tĭd)

adj.

Shaped like or having a carina or keel; ridged.

carinate

(ˈkærɪˌneɪt) or

carinated

adj

(Biology) biology having a keel or ridge; shaped like a keel

[C17: from Latin carīnāre to furnish with a keel or shell, from carīna keel]

Thesaurus

Noun	1.	carinate - birds having keeled breastbones for attachment of flight muscles carinate bird, flying bird bird - warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings keel - the median ridge on the breastbone of birds that fly flightless bird, ratite, ratite bird - flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
Adj.	1.	carinate - having a ridge or shaped like a ridge or suggesting the keel of a ship; "a carinate sepal" carinated, keeled, ridged