Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “a priori”

See all translations

a priori

adjective [before noun] uk   /ˌeɪ.praɪˈɔː.raɪ/ /-priːˈɔː.ri/ us    /-ˈɔːr.aɪ/ formal
relating to an argument that suggests the probable effects of a known cause, or using general principles to suggest likely effects: "It's freezing outside; you must be cold" is an example of a priori reasoning.
a priori
adverb uk   us  
(Definition of a priori from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of a priori?
Add Cambridge dictionaries to your browser to your website

Word of the Day

pot luck

anything that is available or is found by chance, rather than something chosen, planned, or prepared

Word of the Day

Think long and hard; the language of decisions

by Liz Walter,
January 28, 2015
One of the best ways (perhaps the best way) to improve your English is to learn how words go together in phrases, idioms, or other patterns such as verb/noun or adjective/noun pairs (often called ‘collocations’). This blog looks at some useful phrases and collocations connected with the subject of decisions, something we

Read More 

micro pig noun

January 26, 2015
an extremely small pig, bred to be a pet Micro pigs have become popular pets recently, with famous owners including Victoria Beckham, Paris Hilton and Olympic diver, Tom Daley.

Read More