causa sine qua non

Latin noun phrase
cau·​sa si·​ne qua non | \ ˈkau̇-ˌsä-ˌsi-nā-kwä-ˈnōn How to pronounce causa sine qua non (audio) \

Definition of causa sine qua non

: cause without which not : a necessary cause or condition

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“Causa sine qua non.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/causa%20sine%20qua%20non. Accessed 27 January 2020.

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