Mesozoan Definition

mĕzə-zōən, mĕs-
noun
Any of a phylum (Mesozoa) of small, multicellular, wormlike organisms characterized by a very simple, ciliated body with only a mouth, body cavity, and anus: it is a parasite in various marine invertebrates.
Webster's New World

Other Word Forms of Mesozoan

Noun

Singular:
mesozoan
Plural:
mesozoans

Origin of Mesozoan

  • From New Latin Mesozōa former phylum name meso– (because the animals were considered to be intermediate between the protozoans and the metazoans in structure) -zōa pl. of -zōon animal –zoon

    From American Heritage Dictionary of the English Language, 5th Edition

  • Mesozoa +"Ž -an

    From Wiktionary

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mesozoan