plural noun
Hy·droi·da | \hīˈdrȯidə\

Definition of Hydroida 

(Entry 1 of 2)

: an order of Hydrozoa comprising forms alternating a well-developed asexual polyp generation with a generation of free medusae or of abortive medusoid reproductive structures on the polyps — see leptomedusae



Definition of Hydroida (Entry 2 of 2)

taxonomic synonym of hydrozoa

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History and Etymology for Hydroida

Plural noun

New Latin, from Hydra, included genus + -oida

New Latin, from Hydra, included genus + -oida

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exaggeratedly or childishly emotional

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