OSTRACEA
Os*tra"ce*a, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Defn: A division of bivalve mollusks including the oysters and allied shells.
OSTRACEAN
Os*tra"cean, n. Etym: [L. ostrea an oyster. See Oyster.] (Zoöl.)
Defn: Any one of a family of bivalves, of which the oyster is the type.
OSTRACION
Os*tra"ci*on, n. Etym: [NL., fr. Gr. (Zoöl.)
Defn: A genus of plectognath fishes having the body covered with solid, immovable, bony plates. It includes the trunkfishes.
OSTRACIONT
Os*tra"ci*ont, n. (Zoöl.)
Defn: A fish of the genus Ostracion and allied genera.
OSTRACISM
Os"tra*cism, n. Etym: [Gr. Ostracize.]
1. (Gr. Antiq.)