Spiralozooid

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Spiralozooid \Spi*ra`lo*zo"oid\, n. [Spiral + zooid. So called
     because they often have a spiral form when contracted.]
     (Zool.)
     One of the special defensive zooids of certain hydroids. They
     have the form of long, slender tentacles, and bear lasso
     cells.


     [1913 Webster]