hydroid

adjective
hy·​droid | \ ˈhī-ˌdrȯid How to pronounce hydroid (audio) \

Definition of hydroid

 (Entry 1 of 2)

: of or relating to a hydrozoan especially : resembling a typical hydra

hydroid

noun

Definition of hydroid (Entry 2 of 2)

: hydrozoan especially : a hydrozoan polyp as distinguished from a hydrozoan medusa

Examples of hydroid in a Sentence

Recent Examples on the Web: Adjective Scientists are divided over whether a creature sitting near the wheel — which resembles an ostrich feather crossed with a Christmas tree — is a hydroid or a black coral. New York Times, 11 Mar. 2022 Coastal podded hydroid Aglaophenia pluma, open-ocean Planes crab and open-ocean Lepas gooseneck barnacles colonize a piece of floating debris. NBC News, 3 Dec. 2021 Recent Examples on the Web: Noun The rock was also lined with wispy filaments, perhaps a component of the bacterial mats, or perhaps a peculiar animal known as a hydroid. Matt Simon, Wired, 15 Feb. 2021 Some grow algae and hydroid gardens on their backs, others can change color at will, and one, the decoy scorpionfish, has a lure on its dorsal fin that resembles a tiny, swimming fish. Troy Farah, Smithsonian, 29 Mar. 2018 The nudibranch, besides using the hydroids for habitat, regularly consume its home colony’s polyps. Sid Perkins, Science | AAAS, 31 Oct. 2017 In the wild, these slugs are known to feed on hydroids, an invertebrate marine organism. Brigit Katz, Smithsonian, 4 Nov. 2017 Fourteen of the slugs made a beeline for the hydroid that had been fed, according to a study published recently in Biology Letters. Brigit Katz, Smithsonian, 4 Nov. 2017 In shallow waters of the Mediterranean and along the Atlantic coast of western Africa, C. peregrina lives on and near corallike colonies of polyps called hydroids. Sid Perkins, Science | AAAS, 31 Oct. 2017 See More

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

First Known Use of hydroid

Adjective

circa 1864, in the meaning defined above

Noun

1865, in the meaning defined above

History and Etymology for hydroid

Adjective

ultimately from New Latin Hydra

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Time Traveler for hydroid

Time Traveler

The first known use of hydroid was circa 1864

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Dictionary Entries Near hydroid

hydro-hotel

hydroid

Hydroida

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Statistics for hydroid

Last Updated

30 Mar 2022

Cite this Entry

“Hydroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroid. Accessed 19 May. 2022.

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More Definitions for hydroid

hydroid

adjective
hy·​droid | \ ˈhī-ˌdrȯid How to pronounce hydroid (audio) \

Medical Definition of hydroid

 (Entry 1 of 2)

: of or relating to a hydrozoan especially : resembling a typical hydra

hydroid

noun

Medical Definition of hydroid (Entry 2 of 2)

: hydrozoan especially : a hydrozoan polyp as distinguished from a medusa

More from Merriam-Webster on hydroid

Britannica.com: Encyclopedia article about hydroid

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