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histiocytosis

[ hĭs′tē-ō′sī-tōsĭs ]
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n. pl. his•ti•o•cy•to•ses (-sēz)
Abnormal multiplication of histiocytes.histocytosis
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Which of the following nouns has an irregular plural form?
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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