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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

tissue go
part of an organism consisting of an aggregate of cells having a similar structure and function

animal tissue go
the tissue in the bodies of animals

embryonic tissue go
tissue in an embryo

germ layer
(embryology) any of the 3 layers of cells differentiated in embryos following gastrulation

noun.animal

3 Subcategories

ectoderm, exoderm, ectoblast go
the outer germ layer that develops into skin and nervous tissue
mesoderm, mesoblast go
the middle germ layer that develops into muscle and bone and cartilage and blood and connective tissue
endoderm, entoderm, endoblast, entoblast, hypoblast go
the inner germ layer that develops into the lining of the digestive and respiratory systems