carinate

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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]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.carinate - birds having keeled breastbones for attachment of flight musclescarinate - birds having keeled breastbones for attachment of flight muscles
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"