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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

living thing, animate thing go
a living (or once living) entity

organism, being go
a living thing that has (or can develop) the ability to act or function independently

animal, animate being, beast, brute, creature, fauna go
a living organism characterized by voluntary movement

invertebrate go
any animal lacking a backbone or notochord

mollusk, mollusc, shellfish go
invertebrate having a soft unsegmented body usually enclosed in a shell

bivalve, pelecypod, lamellibranch go
marine or freshwater mollusks having a soft body with platelike gills enclosed within two shells hinged together

oyster
marine mollusks having a rough irregular shell

noun.animal

7 Subcategories

seed oyster go
a young oyster especially of a size for transplantation
bluepoint, blue point go
small edible oyster typically from the southern shore of Long Island
Japanese oyster, Ostrea gigas go
a large oyster native to Japan and introduced along the Pacific coast of the United States
Virginia oyster go
common edible oyster of Atlantic coast of North America
pearl oyster, Pinctada margaritifera go
tropical marine bivalve found chiefly off eastern Asia and Pacific coast of North America and Central America
saddle oyster, Anomia ephippium go
thin-shelled bivalve having the right valve deeply notched
window oyster, windowpane oyster, capiz, Placuna placenta go
marine bivalve common in Philippine coastal waters characterized by a large thin flat translucent shell