metazoan noun & adjective. [mɛtǝ'zǝʊǝn] L19.
[mod. Latin Metazoa (see below), from META- + Greek zōia pl. of zōion animal: see -AN.]
Zoology.
A. noun. An animal of the group Metazoa (comprising all animals except protozoa and sponges), members of which have bodies composed of more than one cell and display differentiation of tissue. L19.
b. adjective. Of, pertaining to, or designating this group of animals. L19.

■ metazoic adjective = METAZOAN adjective L19.

■ metazoon noun, pl. -zoa, = METAZOAN noun (usu. in pl.) L19.

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