- tentaculozooid
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n. [L. tentaculum, feeler; Gr. zoon, animal; eidos, form](CNIDARIA: Hydrozoa)A modified polyp in the form of a single tentacle, usually found at the outermost part of the colony; a protective zooid; see tentaculozooid, gastrozooid.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.