sine qua non

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si·ne qua non

 (sĭn′ĭ kwä nŏn′, nōn′, sī′nĭ, kwā)
n.
An essential element or condition: "The perfect cake is the sine qua non of the carefully planned modern wedding" (J.M. Hilary).

[Late Latin sine quā (causā) nōn, without which (cause) not : Latin sine, without + Latin quā : feminine ablative of quī, which + Latin nōn, not.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sine qua non

(ˈsaɪnɪ kweɪ ˈnɒn)
n
(Law) an essential condition or requirement
[literally: without which not]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

si•ne qua non

(ˈsɪn eɪ kwɑ ˈnoʊn, ˈnɒn, kweɪ)
n.
an indispensable or essential condition, element, or factor.
[1585–95; < Late Latin sine quā(causā) nōn without which (thing) not]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

sine qua non

A Latin phrase meaning without which nothing, used to mean something that is absolutely essential.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sine qua non - a prerequisite
prerequisite, requirement - something that is required in advance; "Latin was a prerequisite for admission"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

sine qua non

noun
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Translations

sine qua non

[ˈsaɪnɪkweɪˈnɒn] Nsine qua non m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

sine qua non

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007