a priori

[ ey prahy-awr-ahy, -ohr-ahy, ey pree-awr-ee, -ohr-ee, ah pree-awr-ee, -ohr-ee ]
/ ˌeɪ praɪˈɔr aɪ, -ˈoʊr aɪ, ˌeɪ priˈɔr i, -ˈoʊr i, ˌɑ priˈɔr i, -ˈoʊr i /

adjective

from a general law to a particular instance; valid independently of observation.Compare a posteriori(def 1).
existing in the mind prior to and independent of experience, as a faculty or character trait.Compare a posteriori(def 2).
not based on prior study or examination; nonanalytic: an a priori judgment.

QUIZZES

HEED THE VOX POPULI, AND TAKE THIS WORD OF THE DAY QUIZ!

Test your memory on these verbal firecrackers from the week of June 29 to July 5!
Question 1 of 7
anchorite

Origin of a priori

1645–55; < Latin: literally, from the one before. See a-4, prior1

OTHER WORDS FROM a priori

a·pri·or·i·ty [ey-prahy-awr-i-tee, -or-] /ˌeɪ praɪˈɔr ɪ ti, -ˈɒr-/, noun

WORDS THAT MAY BE CONFUSED WITH a priori

ad hoc a posteriori a priori ex post facto prima facie
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for a priori

British Dictionary definitions for a priori

a priori
/ (eɪ praɪˈɔːraɪ, ɑː prɪˈɔːrɪ) /

adjective

logic relating to or involving deductive reasoning from a general principle to the expected facts or effects
logic known to be true independently of or in advance of experience of the subject matter; requiring no evidence for its validation or support

Derived forms of a priori

apriority (ˌeɪpraɪˈɒrɪtɪ), noun

Word Origin for a priori

C18: from Latin, literally: from the previous (that is, from cause to effect)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012