noun Hy·droi·des \hīˈdrȯi(ˌ)dēz\

Definition of Hydroides

  1. :  a genus of tube-dwelling marine polychaete worms frequently present in the fouling of ship bottoms

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Origin and Etymology of hydroides

New Latin, probably from Hydra (genus of polyps) + -oides (from Latin -oides -oid)

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to criticize severely

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