What does a priori mean?

Definitions for a prioriˌeɪ praɪˈɔr aɪ, -ˈoʊr aɪ, ˌeɪ priˈɔr i, -ˈoʊr i, ˌɑ priˈɔr i, -ˈoʊr i

Here are all the possible meanings and translations of the word a priori.

Princeton's WordNet

  1. a priori(adj)

    involving deductive reasoning from a general principle to a necessary effect; not supported by fact

    "an a priori judgment"

  2. a priori(adverb)

    based on hypothesis or theory rather than experiment

  3. a priori(adverb)

    derived by logic, without observed facts


  1. a priori(Adverb)

    In a way based on theoretical deduction rather than empirical observation

  2. a priori(Adjective)

    Known ahead of time.

  3. a priori(Adjective)

    Based on hypothesis rather than experiment.

  4. a priori(Adjective)

    Self-evident, intuitively obvious

  5. a priori(Adjective)

    Presumed without analysis

  6. a priori(Adjective)

    Developed entirely from scratch, without deriving it from existing languages.

Webster Dictionary

  1. A priori

    characterizing that kind of reasoning which deduces consequences from definitions formed, or principles assumed, or which infers effects from causes previously known; deductive or deductively. The reverse of a posteriori

  2. A priori

    applied to knowledge and conceptions assumed, or presupposed, as prior to experience, in order to make experience rational or possible

  3. Origin: [L. a (ab) + prior former.]


  1. A priori

    An a priori language is any constructed language whose vocabulary is not based on existing languages, unlike a posteriori constructed languages. Examples of a priori languages include Ro, Solresol, Mirad, Klingon, Na'vi and High Valyrian. By contrast, a posteriori languages are ones whose vocabulary is based on existing languages, either as a variation of one language or as a mixture of various languages. Some a priori languages are designed to be international auxiliary languages that remove what could be considered an unfair learning advantage for native speakers of a source language that would otherwise exist for a posteriori languages. Some a priori languages try to categorize their vocabulary, either to express an underlying philosophy or to make it easier to recognize new vocabulary. These are also known as philosophical or taxonomic languages.

Chambers 20th Century Dictionary

  1. A priori

    ā pri-ō′rī, a term applied to reasoning from what is prior, logically or chronologically, e.g. reasoning from cause to effect; from a general principle to its consequences; even from observed fact to another fact or principle not observed, or to arguing from pre-existing knowledge, or even cherished prejudices; (Kant) from the forms of cognition independent of experience.—ns. Apriō′rism, Apriō′rity; Apriō′rist, one who believes in Kant's view of a priori cognition. [L. a, ab, from, priori, abl. of prior, preceding.]


  1. Chaldean Numerology

    The numerical value of a priori in Chaldean Numerology is: 4

  2. Pythagorean Numerology

    The numerical value of a priori in Pythagorean Numerology is: 5

Sample Sentences & Example Usage

  1. Lionel Trilling:

    Educating a son I should allow him no fairy tales and only a very few novels. This is to prevent him from having 1. the sense of romantic solitude (if he is worth anything he will develop a proper and useful solitude) which identification with the hero gives. 2. cant ideas of right and wrong, absurd systems of honor and morality which never will he be able completely to get rid of, 3. the attainment of ideals, of a priori desires, of a priori emotions. He should amuse himself with fact only: he will then not learn that if the weak younger son do or do not the magical honorable thing he will win the princess with hair like flax.

Images & Illustrations of a priori

  1. a prioria prioria priori

Translations for a priori

From our Multilingual Translation Dictionary

  • مسبقArabic
  • a prioriCzech
  • a prioriGerman
  • εκ των προτέρων, συμπερασματικός, επαγωγικόςGreek
  • a prioriSpanish
  • a prioriFrench
  • אפריוריHebrew
  • पूर्वसिद्धHindi
  • a priori, preconcetto, teoricoItalian
  • アプリオリJapanese
  • a prioriDutch
  • z góryPolish
  • a prioriPortuguese
  • a prioriRomanian
  • предположи́тельный, зара́нее, незави́симо от о́пыта, доо́пытный, априо́ри, априо́рный, до о́пытаRussian
  • önselTurkish

Get even more translations for a priori »


Find a translation for the a priori definition in other languages:

Select another language:

Discuss these a priori definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"a priori." Definitions.net. STANDS4 LLC, 2018. Web. 18 Feb. 2018. <https://www.definitions.net/definition/a priori>.

Are we missing a good definition for a priori? Don't keep it to yourself...

Nearby & related entries:

Alternative searches for a priori:

Thanks for your vote! We truly appreciate your support.