hydroid

American  

[hahy-droid] / ˈhaɪ drɔɪd /

adjective

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

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noun

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

hydroid British  

/ ˈhaɪdrɔɪd /

adjective

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

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

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noun

1. a hydroid colony or individual

hydroid Scientific  

/ hī′droid′ /

1. 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.

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Etymology

Origin of hydroid

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

Example Sentences

The cigar-shaped UUV was built by Hydroid, Inc., a Massachusetts-based defense contractor.

From Los Angeles Times • Mar. 29, 2015

However, when Mr. Constable resigned from the Presidency of the Hydroid Fibre Co., the paragraphers took occasion to revive the whole story.

From The Case and Exceptions Stories of Counsel and Clients by Hill, Frederick Trevor

The most numerous of the ancient Radiates are the Acalephlan Corals, combining, in the Hydroid form, the Polyp-like mode of life, habits, and general appearance with the structure of Acalephs.

From The Atlantic Monthly, Volume 11, No. 66, April, 1863 by Various

They are, however, so much alike, that one is here made to serve for both, the above figures being taken from the Hydroid of the Aurelia.

From Seaside Studies in Natural History Marine Animals of Massachusetts Bay. Radiates. by Agassiz, Alexander

Others put forth Hydroid buds only, while others again are wholly sterile.

From The Atlantic Monthly, Volume 10, No. 59, September, 1862 by Various

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