| ostrea | <zoology> A genus of bivalve Mollusca which includes the true oysters. Origin: L, an oyster. Source: Websters Dictionary (01 Mar 1998) |
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| ostreaceous | <zoology> Of or pertaining to an oyster, or to a shell; shelly. "The crustaceous or ostreaceous body." (Cudworth) Origin: L. Ostrea an oyster. See Oyster. Source: Websters Dictionary (01 Mar 1998) |