hydroid

[ hahy-droid ]

/ ˈhaɪ drɔɪd /

SEE SYNONYMS FOR hydroid ON THESAURUS.COM

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.

Origin of hydroid

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

Words nearby hydroid

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

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for hydroid

The medusa which this hydroid liberates is called Thaumatias diaphana.
The Sea-beach at Ebb-tide|Augusta Foote Arnold
Long ago, Trembley attempted to cause, by grafting, the union of two pieces of hydroid polyps into a single individual.
The Biological Problem of To-day|Oscar Hertwig
The Hydroid Zoophytes are represented in the first plate by the following examples.
Glaucus|Charles Kingsley
If the stem of this hydroid, which is usually covered with polyps, is put into an aquarium the polyps soon fall off.
Darwin and Modern Science|A.C. Seward and Others

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

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.

单词	hydroid
释义	hydroid [ hahy-droid ] / ˈhaɪ drɔɪd / SEE SYNONYMS FOR hydroid ON THESAURUS.COM 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. Origin of hydroid First recorded in 1860–65; hydr(a) + -oid Words nearby hydroid hydrogen transport, hydrogeology, hydrograph, hydrographic, hydrography, hydroid, hydrokinetic, hydrokinetics, HYDROLANT, hydrolase, hydrologic cycle Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for hydroid The medusa which this hydroid liberates is called Thaumatias diaphana. The Sea-beach at Ebb-tide\|Augusta Foote Arnold Long ago, Trembley attempted to cause, by grafting, the union of two pieces of hydroid polyps into a single individual. The Biological Problem of To-day\|Oscar Hertwig The Hydroid Zoophytes are represented in the first plate by the following examples. Glaucus\|Charles Kingsley If the stem of this hydroid, which is usually covered with polyps, is put into an aquarium the polyps soon fall off. Darwin and Modern Science\|A.C. Seward and Others 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 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 Words related to hydroid tumor, hydra, coral, coelenterate, anemone 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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hydroid

adjective

noun

Origin of hydroid

Words nearby hydroid

Example sentences from the Web for hydroid

British Dictionary definitions for hydroid

adjective

noun

Word Origin for hydroid

Words related to hydroid

Scientific definitions for hydroid