macronucleus Hear it!

macronucleus definition

macro·nu·cleus (mak′rō no̵̅o̅′klē əs)

noun

the larger of two types of nuclei present in the cells of ciliated protozoans

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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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