English edit

Etymology edit

Metazoa +‎ -an

Noun edit

metazoan (plural metazoans)

  1. (zoology, deprecated) Any animal that undergoes development from an embryo stage with two or three tissue layers, namely the ectoderm, endoderm, and sometimes mesoderm.
  2. (zoology) Any animal that is multicellular.

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Adjective edit

metazoan (not comparable)

  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 edit

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