Car·i·nate Car·i·na·ted a.  Shaped like the keel or prow of a ship; having a carina or keel; as, a carinate calyx or leaf; a carinate sternum (of a bird).
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  carinated
       adj 1: having a ridge or shaped like a ridge or the keel of a ship;
              "a carinate sepal" [syn: ridged, carinate, keeled]
       2: having or shaped like a carina or keel [syn: carinate, ridged,
           keeled]