Spiralozooid

Spiralozooid

Spi*ra`lo*zo"oid\, n. [Spiral + zooid. So called because they often have a spiral form when contracted.] (Zo["o]l.) One of the special defensive zooids of certain hydroids. They have the form of long, slender tentacles, and bear lasso cells.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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