a sine qua non



a sine qua non

  (formal)
something that is necessary, especially if you are going to achieve a particular thing (often + of ) The company sees training as the sine qua non of success.
See also: non, qua, sine

Common Names:

NameGenderPronouncedUsage
Jesse['dʒesi]
Thilo-German
Githa-English (Archaic)
Annuska-Hungarian
ÜLkÜ-Turkish
Imram-Arabic