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sine qua non

A necessary, essential, or required element. The Latin phrases translates literally to "without which not." Some consider a good education to be the sine qua non of a successful career.
See also: non, qua, sine
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

sine qua non

An essential element or condition, as in A perfect cake is the since qua non of a birthday party. This phrase is Latin for "without which not" and has been used in English since about 1600. It appears more in writing than in speech.
See also: non, qua, sine
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

a sine qua ˈnon (of/for something)

/%sIneI kwA: "n@Un; American English "noUn/ (from Latin, formal) something that is essential before you can achieve something else: Many people believe that grammar is the sine qua non of language learning.
In Latin, this means ‘without which not’.
See also: non, qua, sine
Farlex Partner Idioms Dictionary © Farlex 2017

sine qua non

Essential part. As translated from the Latin, “Without which, there would be nothing,” the phrase is an erudite way to describe that which is indispensable or basic.
See also: non, qua, sine
Endangered Phrases by Steven D. Price Copyright © 2011 by Steven D. Price
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References in periodicals archive ?
Another signature of Qua Spa is its partnership with British beauty pioneer Carol Joy London, whose quest for ageless beauty has made her a firm favourite with the world's experts in facial wellness.
It is precisely the uncertainness of the outcomes of her training and its non-identifiable future that engenders the scariness of her presence qua learning qua subjectification.
(10) His experiences overseas are detailed in his letters to Ruth Collier in QUA, ACCF, 5008.1, box 2, files 10-19.
We included all abstracts accepted for presentation at the annual QUA meetings from 2000 to 2010.
Located onshore near the mouth of the Qua lboe River in Akwa Ibom state, the acreage is about two kilometres from Mobil Producing Nigeria (MPN) Qua lboe Terminal.
MPN's JV oil operations comprise the Qua Iboe group and other fields, under a set of licences.
India-based Bharat Petroleum Corporation has purchased one million barrels of Nigerian Qua Iboe crude for loading, from United States-based Exxon Mobil Corp (NYSE: XOM), Bloomberg has reported, citing three sources.
"There are two processes: they may decide to post a firm bid for Qua Iboe on a dated Brent delivered basis or issue a tender to invite offers," he said.
Qua Baths and Spa offers total wellness and in keeping with that focus, has added yoga and water Qi Gong.
Amjad Radhi's early goal sends Qua Aljawiyah FC to a 1-0 away win over previously unbeaten Iraqi premier league leaders Erbil FC on Saturday.During inclement weather at Suleimaniyah Stadium, Erbil Football Club (FC) suffered its first defeat in this season's Iraqi Premier League after they lost to Qua Aljawiyah 1-0 on Saturday, March 27.
Anduhyaun: Jimmy Lee Young with Felipe Rose, Yolanda Martinez, Qua Ti Si, Eddie Three Eagles, Ricky Lewis & Gil Gabaldon II.
"It's going to be tough," says Cine Qua Non prexy Lee Bong-ou.
The third and final point is concerned with the selection of reproduction as the key unifying activity of living thing qua substance.
Qua, SC, USN, completed 26 years of active service and retired on Sept.
First Democracy provides readers with an understanding of the barriers preventing contemporary America in the opening decade of the 21st century from being a true democracy, as well as offering readers a provocative presentation of the democratic "sine qua non": freedom from tyranny, social harmony, the rule of law, natural equality, citizen wisdom, reasoning without knowledge, and general education.