hydroid

[ hahy-droid ]

/ ˈhaɪ drɔɪd /

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adjective

noting or pertaining to that form of hydrozoan that is asexual and grows into branching colonies by budding.

noun

the phase of a hydrozoan coelenterate that consists of polyp forms usually growing as an attached colony.

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Origin of hydroid

First recorded in 1860–65; hydr(a) + -oid

Words nearby hydroid

hydrogen tartrate, hydrogeology, hydrograph, hydrographic, hydrography, hydroid, hydrokinetic, hydrokinetics, HYDROLANT, hydrolase, hydrologic cycle

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use hydroid in a sentence

The image caption has also been updated to clarify that not all hydroid animals are coastal.
The Great Pacific Garbage Patch is a ‘raft of life’ for animals in the open ocean|Kate Baggaley|December 3, 2021|Popular-Science
The illustration shows a plant on which the hydroid Sertularia pumila is growing.
The Sea-beach at Ebb-tide|Augusta Foote Arnold
A hydroid about one inch high, growing in patches and appearing like tufts of moss on rocks between tide-marks.
The Sea-beach at Ebb-tide|Augusta Foote Arnold
There are some species which, having no hydroid or strobila state, mature without alternation of generation (metagenesis).
The Sea-beach at Ebb-tide|Augusta Foote Arnold

This hydroid is found creeping over seaweeds in tide-pools from Long Island Sound northward.
The Sea-beach at Ebb-tide|Augusta Foote Arnold
The hydroid Hydractinia polyclina often covers the exterior of such shells with a brown, velvety growth.
The Sea-beach at Ebb-tide|Augusta Foote Arnold

British Dictionary definitions for hydroid

hydroid

/ (ˈhaɪdrɔɪd) /

adjective

of or relating to the Hydroida, an order of colonial hydrozoan coelenterates that have the polyp phase dominant

(of coelenterate colonies or individuals) having or consisting of hydra-like polyps

noun

a hydroid colony or individual

Word Origin for hydroid

C19: from hydra + -oid

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

Scientific definitions for hydroid

hydroid

[ hī′droid′ ]

Any of numerous, usually colonial marine cnidarians, having a polyp rather than a medusoid form as the dominant stage of the life cycle. Hydroids have a simple cylindrical body with a mouthlike opening surrounded by tentacles. Most species form colonies with individual hydroids branching off from a common hollow tube that is probably used to share ingested food. The young develop from eggs or from buds. The most well-known hydroids are the hydras (genus Hydra), which are atypical in being both freshwater and solitary.

hydroid

Origin of hydroid

Words nearby hydroid

Words related to hydroid

How to use hydroid in a sentence

British Dictionary definitions for hydroid

Word Origin for hydroid

Scientific definitions for hydroid