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a prefix meaning “not,” freely used as an English formative, usually with a simple negative force as implying mere negation or absence of something (rather than the opposite or reverse of it, as often expressed by un-1. ): nonadherence; noninterference; nonpayment; nonprofessional .
Origin of non-
prefix representing L adv. nōn not

non obstante

[nohn ohb-stahn-te; English non ob-stan-tee] /noʊn oʊbˈstɑn tɛ; English nɒn ɒbˈstæn ti/
preposition, Latin.
short for Anglo-Latin, Latin nōn obstante aliquō statūtō in contrārium any statute to the contrary notwithstanding

non placet

[non pley-sit] /nɒn ˈpleɪ sɪt/
(especially in a church or university assembly) an expression or vote of dissent or disapproval.
First recorded in 1580-90, non placet is from the Latin word nōn placet it is not pleasing Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for non
Contemporary Examples
Historical Examples
  • And she is, as I believe you are aware, a remarkably fine woman, with no non—'

    Little Dorrit Charles Dickens
  • Of this the Bard remarks “ni mad,” it was not honourable, “non bene.”

    Y Gododin Aneurin
  • He merely shook his head, said "non capisco," and inquired if I was "Prussiano."

  • Presently he looked up; she nodded and the Ah, non giunge floated from her.

    The Paliser case Edgar Saltus
  • non,” replied the Russian, with the air of a man of principles.

    The Gypsies Charles G. Leland
British Dictionary definitions for non


indicating negation: nonexistent
indicating refusal or failure: noncooperation
indicating exclusion from a specified class of persons or things: nonfiction
indicating lack or absence, esp of a quality associated with what is specified: nonobjective, nonevent
Word Origin
from Latin nōn not
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 non


prefix meaning "not, lack of," or "sham," 14c., from Anglo-French noun-, from Old French non-, from Latin non "not, by no means, not at all, not a," from Old Latin noenum "not one" (*ne oinom, from PIE *ne "not" + *oi-no-; see one). In some cases perhaps from Middle English non "not" (adj.), from Old English nan (see not).

Online Etymology Dictionary, © 2010 Douglas Harper
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non in Medicine

non- pref.
Not: noninvasive.

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