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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

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 measured harmonics of sine and pure sine wave UPS are shown in table 5 and 6, which are within the limit of %THD defined in the IEEE-519 standard.
A sine curve centred halfway between the minimum and maximum temperatures (Watson and Beattie 1996; Roltsch et al.
Norris said Sine Cura is committed to using local and fresh ingredients whenever possible and uses homemade sauces that include tzatziki on the Mediterranean wrap and homemade lemon-cilantro and spicy aioli on the BLT and cheese steak wraps.
Paradoxul apartine stiintei semantice, dar apartine si culturii de toate culorile, el face viata insuportabila cand viata este excesiv de suportabila, dar o face de dorit, cand este diferita, conform regulii ca fiecare identitate este mai fericita cand se ignora pe sine si isi cauta satisfactia in alta.
Behavioral health facilities have a variety of choices when it comes to patient toilets, although Sine and Hunt are quick to assert that urinals should not be one of those choices.
0-second wavefiles containing an equal mix of four synthesized sine waves (500 Hz, 1400 Hz, 2600 Hz, and 3400 Hz), peaking at 1.
We then counted the number of SINEs, LINEs, and LTRs for each gene in pair-wise species.
When a sine wave is launched into the port to simulate or measure the S-Parameters, by definition, it must be in a 50-Ohm environment.
To do this, an SCR needs a point of reference to continually reset its "clock," and the handiest one to use is the point where the slope of the sine wave passes through the zero-voltage point.
But just as ocean waves don't maintain a perfect sine wave profile, they don't often follow the principle of linear superposition.
This paper derives a novel method of approximating the Hilbert transform by the use of sine convolution.
This would have adverse effects on jobs and economic development in rural communities already struggling to recover from reduced agricultural production, according to Wayne Sine, director of corporate taxation for Southern States Cooperative Inc.
There are two types of power inverters: "modified sine wave" and "pure sine wave.
Abstract: Traditionally fitting a sine curve with three sample points is taken as a combined optimal problem in which three variables are involved.
One such rule is that the only sort of waveform we are allowed to talk about is a sine wave.