Sine qua non or conditio sine qua non is a Latinlegal term for "without which it could not be" ("but for"). It refers to an indispensable action, condition or thing.
Example
Mr. Wilson left his car but kept the key in the ignition. Dennis, 6-years-old and a.k.a. The Menace, started the car and backed it over Margaret.
Without Mr. Wilson's careless act, Dennis would not be driving the car. Therefore, Mr. Wilson's act was the conditio sine qua non of Margaret's injury.
Sinequanon or conditiosinequanon was originally a Latin legal term for "without which it could not be" ("but for").
It refers to an indispensable and essential action, condition, or ingredient.
In recent times it has passed from a merely legal usage to a more general usage in many languages, including English, German, French, Italian, etc. In Classical Latin the form conditio would be condicio.
Excerpt:...we observed that Â[t]he sinequanon of copyright is originality, id., at 345, and held that copyright protection is unavailable to Âa narrow category of works in which the creative spark is utterly...
Hindu,..."Corroboration is not the sinequanon for conviction in rape cases," observed a two-judge Bench comprising Justices Arijit Pasayat and SH Kapadia.
OpEdNews Accordingly, the restored integrity of the ballot is the sinequanon of the overthrow of the Republican autocracy in November.