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hydrozoan

[ hahy-druh-zoh-uhn ]
/ ˌhaɪ drəˈzoʊ ən /
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noun

any freshwater or marine coelenterate of the class Hydrozoa, including free-swimming or attached types, as the hydra, in which one developmental stage, either the polyp or medusa, is absent, and colonial types, as the Portuguese man-of-war, in which both medusa and polyp stages are present in a single colony.

adjective

belonging or pertaining to the Hydrozoa.

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Origin of hydrozoan

1875–80; <New Latin Hydrozo(a) (see hydro-1, -zoa) + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for hydrozoan

hydrozoan
/ (ˌhaɪdrəʊˈzəʊən) /

noun

any colonial or solitary coelenterate of the class Hydrozoa, which includes the hydra, Portuguese man-of-war, and the sertularians

adjective

of, relating to, or belonging to the Hydrozoa
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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