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hydroid

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.02 sec.
hydroid [′hī‚drȯid]
(invertebrate zoology)
The polyp form of a hydrozoan cnidarian. Also known as hydroid polyp; hydropolyp.
Any member of the Hydroida.


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By shrinking these external hydroids the pressure lessens on them, which in turn eases the throbbing that is the cause of so much pain.
Settlement of Iceland scallop spat (Chlamys islandica) in response to hydroids and filamentous red algae: field observations and laboratory experiments.
The most common injuries occur from coming in contact with fire coral, stinging hydroids, jellyfish or scrapes from hard coral.
 
 
 
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