Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Encyclopedia.
Related to sine: trigonometry, sine qua non, Inverse sine, Sine formula, Sine cosine tangent, Sine table

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

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

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

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
References in periodicals archive ?
The shape of the increase in temperature between the minimum and maximum was initially examined by fitting two partial (single quadrant) sine curves to the temperatures over this period.
Regardless of the type and style of toilet fixture chosen, Sine and Hunt recommend an automatic push-button solution for the flush valve, which is preferably recessed into the wall.
The subject of particular interest here is the character and content of nulla poena sine lege in international law and, more specifically, in international criminal justice.
In a comparative analysis of the sequence characteristics, we detected repetitive elements such as SINEs, LINEs, and LTRs in imprinted (human and mouse) and control (cattle) genes.
With four ports, there are 16 possible combinations (FIGURE 4) of sine wave going ins and coming outs.
For a real fitting sine curve problem, there might be several possible periods.
Sine Nomine Associates (SNA), a systems and network consultancy based in Ashburn, Virginia, specializes in assessment, design, implementation and support of critical computing infrastructure for enterprises.
Sine begins by showing us the problems that a globalized economy has created, such as the development of a large class of working poor with little chance of advancement, as well as environmental and genetic diversity problems.
Sine does his best to acknowledge that McWorld is not all bad.
Divorcee Sine Chamberlain said she feared for her life as Michael Brennan tailed her for more than an hour.
The cables use Sine X-Line connectors that allow the cables to plug directly into the control panel of the programmable logic processor (PLC).
Sine, who made a name for himself with his book, The Mustard Seed Conspiracy, writes as a Christian who wants to put forward an alternative--God's `better way', he calls it--to this polarization.
At what point did the beach-towel color scheme replace black as the sine qua non of S/M anyway?
Further, both left and right are hidebound with their own versions of political correctness, contends evangelical author Tom Sine, in his book, Cease Fire: Searching for Sanity in America's Culture War (Eerdmans).
Three other circuit courts read the Lincoln ruling to mean what National Starch claimed it did: Creation of a separate asset was a sine qua non of capitalization treatment.