Ces·tra·ci·ont n. Zool. A shark of the genus Cestracion, and of related genera. The posterior teeth form a pavement of bony plates for crushing shellfish. Most of the species are extinct. The Port Jackson shark and a similar one found in California are living examples.
Ces·tra·ci·ont, a. Zool. Pertaining to, or characteristic of, the genus Cestracion.
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