Skip to main content
a priori

a priori

7 9.9
Known by reason rather than by experience
  • adjective
  • /eɪ praɪˈɔːri/
  • Formal
translation icon : a priori
  • To solve the problem, she relied on a priori reasoning rather than empirical data.
  • a priori assumption
  • a priori hypothesis
  • a priori predictions

So it seems hard a priori, but let's think about it a bit.

Autoplay Next

Examples

  • Further, research might examine whether child characteristics can be identified a priori that suggest intervention effectiveness, thereby streamlining the intervention process.

    Academic text (2013)
  • OK, so suppose that we have some a priori distribution on the elements.

  • And why should we a priori take some of those solutions off the table, like nuclear?

  • However, an a priori power analysis revealed that our sample size was appropriate.

    Academic text (2013)
  • And then where would you get your a priori probability from?

  • So up here we got the a priori probability of B.

  • Do human beings have synthetic a priori concepts?

  • Therefore, the earlier mentioned question was explored in this study with no specific a priori hypotheses.

    Academic text (2008)
  • Under this approach, citizens are understood as a priori autonomous in terms of their innate capacity to express and actualize themselves.

    Academic text (2017)
  • Statistically significant heterogeneity did not preclude statistical pooling. However, we planned to explore heterogeneity with a priori-defined patient demographics.

    Academic text (2017)

Synonyms

aprioristic
vsa priori
  • Formal
9.9

Based on reasoning or theory rather than experience

is used as an adjective or adverb to mean reasoning not observation
nonempirical
vsa priori
  • Formal
8.9

Not based on observation or testing but on ideas and reasoning

refers specifically to knowledge from theoretical deduction rather than experience

Antonyms

a posteriori
  • Formal
1 9.3

Something that comes from observation or experience rather than theory

Surface Forms

a priori positive

Morphology

a + priori

The phrase 'a priori' is a Latin loan that is lexicalized in English; its parts are not productive English morphemes and a B1 learner who ‘‘knows’’ the word forms would not be able to derive the technical meaning 'from theoretical deduction rather than from experience'. Although similar Latin-derived forms appear in other languages, the expression is specialized and must be learned as a unit rather than composed from transparent English constituents.

Etymology

A priori comes from Latin words a and priori, where a means 'from' and priori means 'earlier'. So the literal idea is 'from what comes before', and the phrase is used for ideas or knowledge we can know without needing experience or tests.