planarian Hear it!

planarian definition

pla·nar·ian (plə ner′ē ən)

noun

any of an order (Tricladida) of small, soft-bodied, free-living, turbellarian flatworms moving by means of cilia

Etymology: < ModL Planaria, name of the genus < LL planarius, flat < L planus, plane

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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