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Protoctista

[ (pruh-tohk-tis-ta) ]
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The kingdom of organisms, mostly single celled, whose cells contain a nucleus. The amoeba is a member of this kingdom.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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