decurved

de·curved (dē kʉrvd′)

adjective

Zool. curved or bent downward

Etymology: transl. of LL decurvatus < L de-, de- + curvatus, pp. of curvare, to curve

Modifies a noun

fin: Ahead of us there was a ' blow ' and then a rolling back displaying a rather blunt decurved dorsal fin.

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