apodictic

US: (ap′ə dik′tik)

WordReference Random House Unabridged Dictionary of American English © 2025

ap•o•dic•tic  (ap′ə dik′tik), adj. 

1. Philosophy incontestable because of having been demonstrated or proved to be demonstrable.
2. Philosophy [Logic.] (of a proposition) necessarily true or logically certain.

Also, ap•o•deic•tic  (ap′ə dīk′tik), ap′o•dic′ti•cal. 

• Greek apodeiktikós proving fully. See apo-, deictic
• Latin apodīcticus
• 1645–55

ap′o•dic′ti•cal•ly, ap′o•deic′ti•cal•ly, adv.