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Definition of a priori


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a pri·o·ri  audio  (ä pr-ôr, -r, pr-ôr, -r) KEY  

ADJECTIVE:
  1. Proceeding from a known or assumed cause to a necessarily related effect; deductive.
    1. Derived by or designating the process of reasoning without reference to particular facts or experience.
    2. Knowable without appeal to particular experience.
  2. Made before or without examination; not supported by factual study.

ETYMOLOGY:
Medieval Latin prir : Latin , from + Latin prir, ablative of prior, former

OTHER FORMS:
a pri·ori (Adverb), a pri·ori·ty   (-ôr-t, -r-) KEY  (Noun)


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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
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