hydrozoan Hear it!

hydrozoan definition

hydro·zoan (hī′drə zō′ən)

adjective

of a class (Hydrozoa) of cnidarians having a saclike body consisting of two layers of cells, and a mouth that opens directly into the body cavity

Etymology: < ModL Hydrozoa < hydra + zo- + -an

noun

any animal of this class, as a hydroid or Portuguese man-of-war

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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