Cestraciont
Ces`tra´ci`ont
| n. | 1.(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. | a. | 1.(Zool.) Pertaining to, or characteristic of, the genus Cestracion. |