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hydractinian - Meaning and Examples

Meaning of 'hydractinian' (Webster Dictionary)

1 . Hydractinian [ n.]
- Any species or marine hydroids, of the genus Hydractinia and allied genera. These hydroids form, by their rootstalks, a firm, chitinous coating on shells and stones, and esp. on spiral shells occupied by hermit crabs. See Illust. of Athecata.

Nearby Words:

hydage hydantoic hydantoin hydatid hydatiform hydatoid hydr- hydra hydra-tainted hydrachnid

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