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WordNet-Online 
 Definitions from WordNet
Noun hydrozoan has 1 sense 
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| Definitions from the WebHydrozoanDefinition: A small marine animal belonging to the phylum Cnidaria, typically found in colonies and exhibiting both polyp and medusa forms. ExamplesNoun: 
 Adjective: 
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| hydroxyl radical hydroxymethyl hydroxyproline hydroxytetracycline hydroxyzine hydroxyzine hydrochloride hydrozephalus hydrozoa hydrozoan hydrsphere hydrus hye-jeong hyemalis hyemoschus hyemoschus aquaticus hyen hyena 
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