American English

Definition of sine qua non noun from the Oxford Advanced American Dictionary

 

sine qua non

 noun
noun
NAmE//ˌsɪni kwɑ ˈnɑn//
 
, NAmE//ˌsɪni kwɑˈnoʊn//
 
[singular] sine qua non (of/for something) (from Latin) (formal)
 
jump to other results
something that is essential before you can achieve something else TV coverage is the sine qua non of a sport if it is to thrive. Trust is a sine qua non for any counseling.
See the Oxford Advanced Learner's Dictionary entry: sine qua non