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[dih-bil-i-tee] /dɪˈbɪl ɪ ti/
noun, plural debilities.
a weakened or enfeebled state; weakness:
Debility prevented him from getting out of bed.
a particular mental or physical handicap; disability.
Origin of debility
late Middle English
1425-75; late Middle English debylite < Middle French debilite < Latin dēbilitās, equivalent to dēbil(is) weak + -itās -ity Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for debility


noun (pl) -ties
weakness or infirmity
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 debility

early 15c., from Middle French debilite (Modern French débilité) or directly from Latin debilitatem (nominative debilitas) "a laming, crippling, weakening," from debilis "lame, disabled, crippled," figuratively "weak, helpless," from de- "from, away" (see de-) + -bilis "strength," from PIE root *bel- (see Bolshevik).

Online Etymology Dictionary, © 2010 Douglas Harper
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debility in Medicine

debility de·bil·i·ty (dĭ-bĭl'ĭ-tē)
The state of being weak or feeble; infirmity.

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