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phthiriasis

[thahy-rahy-uh-sis, thi-] /θaɪˈraɪ ə sɪs, θɪ-/
noun
1.
crab lice infestation.
Origin
1590-1600
1590-1600; < Greek phtheiríāsis, equivalent to phtheír louse + -iāsis -iasis
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for phthiriases

phthiriasis

/θɪˈraɪəsɪs/
noun
1.
(pathol) the state or condition of being infested with lice; pediculosis
Word Origin
C16: via Latin from Greek, from phtheir louse
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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phthiriases in Medicine

phthiriasis phthi·ri·a·sis (thĭ-rī'ə-sĭs, thī-)
n.
Infestation with lice, especially crab lice; pediculosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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