hydrozoan

noun

hy·dro·zo·an | \ ˌhī-drə-ˈzō-ən

Definition of hydrozoan

: any of a class (Hydrozoa) of cnidarians (such as the hydra, fire coral, and Portuguese man-of-war) that includes solitary and colonial polyps and medusae but often having the medusa stage reduced or absent and lacking nematocysts in the digestive cavity — see siphonophore

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Examples of hydrozoan in a Sentence

Recent Examples on the Web Many living things, including strawberries, orchids and some jellyfish cousins called hydrozoans, propagate this way today. — Cara Giaimo, New York Times, "The Networks That Ruled Earth’s Ancient Seas," 6 Mar. 2020 The creatures, which are marine hydrozoans and relatives of jellyfish, have recently been spotted on Sullivan’s Island and in Hilton Head. — USA TODAY, "Black Hills yaks, serious senioritis on campus, Pony Express: News from around our 50 states," 10 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrozoan.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.