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[puh-ree-sis, par-uh-sis] /pəˈri sɪs, ˈpær ə sɪs/
noun, Pathology.
partial motor paralysis.
a late manifestation of syphilis, characterized by progressive dementia and paralysis.
Origin of paresis
1685-95; < New Latin < Greek páresis paralysis, a letting go, equivalent to pare- (variant stem of pariénai to let go) + -sis -sis
Related forms
[puh-ret-ik, -ree-tik] /pəˈrɛt ɪk, -ˈri tɪk/ (Show IPA),
noun, adjective
paretically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for paresis


/pəˈriːsɪs; ˈpærɪsɪs/
noun (pathol) (pl) -ses (-ˌsiːz)
incomplete or slight paralysis of motor functions
short for general paresis See general paralysis of the insane
Derived Forms
paretic (pəˈrɛtɪk) adjective
Word Origin
C17: via New Latin from Greek: a relaxation, from parienai to let go, from para-1 + hienai to release
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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Word Origin and History for paresis

"partial paralysis," 1690s, Modern Latin, from Greek paresis "letting go, slackening of strength, paralysis," from stem of parienai "to let go," from para- (see para- (1)) + hienai "to send, throw" (see jet (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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paresis in Medicine

paresis pa·re·sis (pə-rē'sĭs, pār'ĭ-sĭs)
n. pa·re·ses (-sēz)

  1. Slight or partial paralysis.

  2. General paresis.

pa·ret'ic (pə-rět'ĭk) adj. & n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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