from Wiktionary, Creative Commons Attribution/Share-Alike License

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

from the GNU version of the Collaborative International Dictionary of English

  • adj. Self-evident; intuitively true; evident beyond contradiction.

from The Century Dictionary and Cyclopedia

  • n. etc. See apodictic, etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of a proposition; necessarily true or logically certain


From Ancient Greek ἀποδεικτικός (apodeiktikos). Compare Latin apodicticus (Wiktionary)


  • For geometrical principles are always apodeictic, that is, united with the consciousness of their necessity, as: "Space has only three dimensions."

    The Critique of Pure Reason

  • I believed it was apodeictic that Collins was not as well known, but it appears I was embrangled.

    Save the language! « Write Anything

  • It is apodeictic that the caliginosity of the agrestic embrangle periapts with mansuetude.

    Save the language! « Write Anything

  • The contrast should rather be seen as one between apodeictic certainty (about intelligible matters) and plausibility [13] (about empirical matters).

    Plato's Timaeus

  • One implication of the unending nature of the interpretation of appearances through infinite sequences of signs is that Peirce can be no type of epistemological foundationalist or believer in absolute or apodeictic knowledge.

    Nobody Knows Nothing

  • It is apodeictic that, while perhaps obscure, words like "skirr" and "periapt" serve uniquely expressive purposes and cannot be subrogated by other, more commonplace words.

    Archive 2008-10-01

  • Chomskyans typically take this point, conceding that the argument from the poverty of the stimulus is not apodeictic.

    Innateness and Language

  • Logic, or Analytic, as the theory or method of arriving at true or apodeictic conclusions; and (2) Dialectic as the method of arriving at conclusions that are accepted or pass current as true, [Greek: endoxa] probabilia; conclusions in regard to which it is not taken for granted that they are false, and also not taken for granted that they are true in themselves, since that is not the point.

    The Art of Controversy

  • It is understood that a combination of assertory or of apodeictic premises may warrant an assertory or an apodeictic conclusion; but that if we combine either of these with a problematic premise our conclusion becomes problematic; whilst the combination of two problematic premises gives a conclusion less certain than either.

    Logic Deductive and Inductive

  • When we add further that, unless we deny that the notion of morality has any truth or reference to any possible object, we must admit that its law must be valid, not merely for men but for all rational creatures generally, not merely under certain contingent conditions or with exceptions but with absolute necessity, then it is clear that no experience could enable us to infer even the possibility of such apodeictic laws.



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  • 'He said in an attempt at a lighter tone, "Now Melissa the plain apodeictic fact is nobody is very sensible," but she paid no attention to this truth...'

    - W.M. Spackman, An Armful of Warm Girl

    January 2, 2012

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

    April 5, 2011

  • JM acknowledges that it is evidently demonstrable that an apodeictic is incontrovertible.

    January 10, 2011