What is "apodeictic"

Apodeictic \Ap"o*deic"tic\, Apodictic \Ap`o*dic"tic\, Apodeictical \Ap`o*deic"tic*al\, Apodictical \Ap`o*dic"tic*al\, a. [L. apodicticus, Gr. ?, fr. ? to point out, to show by argument; ? from + ? to show.] Self-evident; intuitively true; evident beyond contradiction.
--Brougham. Sir Wm. Hamilton.

a. (context logic English) Of or stating the characteristic feature of a proposition that is necessary (or impossible), perfectly certain (or inconceivable) or incontrovertibly true (or false).

adj. of a proposition; necessarily true or logically certain [syn: apodictic]