Source : Webster's Revised Unabridged Dictionary (1913)

Carinate \Car"i*nate\, Carinated \Car"i*na`ted\a. [L. carinatus,
   fr. carina keel.]
   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).

Source : WordNet®

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}]