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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

calyculus, caliculus, calycle
a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp)

noun.animal

1 Subcategories

optic cup, eyecup go
(embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina