metazoan
noun
- 1
Any animal that undergoes development from an embryo stage with three tissue layers, namely the ectoderm, mesoderm, and endoderm.
- 2
Any animal that is multicellular.
adjective
- 1
Having to do with animals that develop from an embryo with three tissue layers.
- 2
Having to do with animals that are multicellular.
Synonyms
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