apodictic

[ap-uh-dik-tik] /ˌæp əˈdɪk tɪk/
adjective
1.
incontestable because of having been demonstrated or proved to be demonstrable.
2.
Logic. (of a proposition) necessarily true or logically certain.
Also, apodeictic
[ap-uh-dahyk-tik] /ˌæp əˈdaɪk tɪk/ (Show IPA), apodictical.
Origin
1645-55; < Latin apodīcticus < Greek apodeiktikós proving fully. See apo-, deictic
Related forms
apodictically, apodeictically, adverb
British Dictionary definitions for apodeictic

apodeictic

/ˌæpəˈdaɪktɪk/
adjective
1.
unquestionably true by virtue of demonstration
2.
(logic, archaic)
  1. necessarily true
  2. asserting that a property holds necessarily
Compare problematic (sense 2), assertoric
Derived Forms
apodeictically, apodictically, adverb
Word Origin
C17: from Latin apodīcticus, from Greek apodeiktikos clearly demonstrating, from apodeiknunai to demonstrate
Word Origin and History for apodeictic

apodictic

adj.

"clearly demonstrated," 1650s, from Latin apodicticus, from Greek apodeiktikos, from apodeiktos, verbal adjective of apodeiknynai "to show off, demonstrate," literally "to point away from" (other objects, at one), from apo "off, away" (see apo-) + deiknynai "to show" (see diction).