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pla•nar•i•an



Pronunciation: (plu-nâr'ē-un), [key]
n. Zool.
any of various free-swimming, mostly freshwater flatworms of the class Turbellaria, having an undulating or sluglike motion: popular in laboratory studies for the ability to regenerate lost parts.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

planarplanate
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