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Lack; deficiency: leukopenia.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a combining form meaning “lack, deficiency,” used esp. to form nouns denoting a deficiency in the blood of a factor specified by the initial element: leukopenia.
[< Greek penía poverty, need]
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