SINE QUA NON By N., Sam M.S. - 30 a Latin phrase that means without which not. It is for an indispensable element. SINE QUA NON: "Sine qua non is an element that can't be dispensed with." Related Psychology Terms SCAFFOLDING SINE WAVE AGENT Terms of Service INCIDENTAL LEARNING ANTISOCIAL REACTION READING DISABILITY (Paralexia, Dyslexia) PREJUDICE EGO PSYCHOTHERAPY KIRKBRIDE, THOMAS (1809-83) Cite this page: N., Sam M.S., "SINE QUA NON," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/sine-qua-non/ (accessed June 28, 2022).