Category:Placoid

Plac"oid, a. Etym: [gr. -oid.] (zoöl.)

Defn: platelike; having irregular, platelike, bony scales, often Bearing spines; pertaining to the placoids.

Placoid Plac"oid, n. (zoöl.) (a) any fish having placoid scales, as the sharks. (b) one of the placoides.