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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

thing go
a separate and self-contained entity

part, piece go
a portion of a natural object

body part go
any part of an organism such as an organ or extremity

structure, anatomical structure, complex body part, bodily structure, body structure go
a particular complex anatomical part of a living thing

valve go
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it

heart valve, cardiac valve go
a valve to control one-way flow of blood

atrioventricular valve go
either of two heart valves through which blood flows from the atria to the ventricles

tricuspid valve, right atrioventricular valve
valve with three cusps

noun.body

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