Dictionary
2 ENTRIES FOUND:

a priori

adjective a pri·o·ri \ˌä-prē-ˈr-ē, ˌa-; ˌā-(ˌ)prī-ˈr-ˌī, -ˌprē-ˈr-ē\

: relating to what can be known through an understanding of how certain things work rather than by observation

Full Definition of A PRIORI

1
a :  deductive
b :  relating to or derived by reasoning from self-evident propositions — compare a posteriori
c :  presupposed by experience
2
a :  being without examination or analysis :  presumptive
b :  formed or conceived beforehand
a priori adverb
apri·or·i·ty \-ˈr-ə-tē\ noun

Examples of A PRIORI

  1. There's no a priori reason to think your expenses will remain the same in a new city.
  2. <an a priori argument for the defendant's innocence>

Origin of A PRIORI

Latin, literally, from the former
First Known Use: 1652

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