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| hy·dro·zo·an [ hdrə zṓ ən ] (plural hy·dro·zo·ans) |
noun |
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| Definition: |
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invertebrate animal: a ocean or freshwater invertebrate animal, e.g. a polyp or jellyfish. Class Hydrozoa.
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| [Late 19th century. < modern Latin Hydrozoa "water animals" < Greek hudōr "water" + zōia, plural of zōion "animal"] |
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