# a priori

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Related to A-priori: À priori

## a pri·o·ri

(ä′ prē-ôr′ē, ā′ prī-ôr′ī)
1. Proceeding from a known or assumed cause to a necessarily related effect; deductive.
2.
a. Derived by or designating the process of reasoning without reference to particular facts or experience.
b. Knowable without appeal to particular experience.
3. Made before or without examination; not supported by factual study.

[Medieval Latin ā priōrī : Latin ā, from + Latin priōrī, ablative of prior, former.]

a′ pri·or′i·ty (-ôr′ĭ-tē, -ŏr′-) n.

## a priori

(eɪ praɪˈɔːraɪ; ɑː prɪˈɔːrɪ)
1. (Logic) logic relating to or involving deductive reasoning from a general principle to the expected facts or effects
2. (Logic) logic known to be true independently of or in advance of experience of the subject matter; requiring no evidence for its validation or support
3. (Statistics) statistics See prior probability, mathematical probability
[C18: from Latin, literally: from the previous (that is, from cause to effect)]
apriority n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

## a pri•o•ri

(ˌeɪ praɪˈɔr aɪ, -ˈoʊr aɪ, ˌeɪ priˈɔr i, -ˈoʊr i, ˌɑ priˈɔr i, -ˈoʊr i)
1. from a general law to a particular instance; valid independently of observation. Compare a posteriori (def. 1).
2. existing in the mind independent of experience.
3. conceived beforehand.
[1645–55; < Latin: literally, from the one before. See a-4, prior1]
a•pri•or•i•ty (-ˈɔr ɪ ti -ˈɒr-) n.

## a priori

A Latin phrase meaning from the previous, used to mean deduced or known to be true.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Adj. 1 a priori - involving deductive reasoning from a general principle to a necessary effect; not supported by fact; "an a priori judgment"analytical, analytic - of a proposition that is necessarily true independent of fact or experience; "`all spinsters are unmarried' is an analytic proposition"deductive - involving inferences from general principlesa posteriori - involving reasoning from facts or particulars to general principles or from effects to causes; "a posteriori demonstration" 2 a priori - based on hypothesis or theory rather than experimenttheoretic, theoretical - concerned primarily with theories or hypotheses rather than practical considerations; "theoretical science" Adv. 1 a priori - derived by logic, without observed factsa posteriori - derived from observed facts
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

## a priori

adjective There is no a priori hypothesis to work with.
adverb One assumes, a priori, that a parent would be better at dealing with problems.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
Translations
a priori
a priori
z góry
a priori
önsel

## a priori

[eɪpraɪˈɔːraɪ]
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

## a priori

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

## a priori

[ɑːprɪˈɔːrɪ] adj (frm) (argument) → a priori; (judgment, statement) → aprioristico/a
an a priori decision →
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
Evidence creation is based on "subjective" assumptions--namely our a-priori "subjective" knowledge within the context of our worldview, and knowledge is shaped by the "seemingly objective nature" of evidence as defined within this worldview.
Furthermore, Tikhonov regularization under suitable a-priori assumptions and an a-priori choice rule, [alpha] = [alpha]([delta]) ~ c x [[delta].sup.2/3], is of optimal order, and the best possible convergence rate obtainable is
[mathematical expression not reproducible] (i) is the a-priori probability of bit i resulting from the channel extrinsic information and input to the first decoder.
We cannot avoid prejudices when talking about new technologies, because a prejudice, etymologically speaking, is an a-priori judgment, made before having all the evidence necessary to judge.
"Although there have been some very impressive examples of autonomous or near-autonomous operation using a combination of a-priori maps and data from these sensor suites, the environments in which they operate are highly constrained and full autonomy is not achievable in the short term.
A-priori sample size was calculated [19] minimum required sample 64 was obtained.
Si le desir de retrouver le pays d'origine, plus de vingt ans apres, a renforce cette envie pour Elias Djemil, le challenge a ete pour tous d'aller voir de visu un des pays qui composent ce monde [beaucoup moins que] bizarre [beaucoup plus grand que] pour l'Occidental que l'on appelle [beaucoup moins que] arabe [beaucoup plus grand que] ou [beaucoup moins que] musulman [beaucoup plus grand que] et tordre le cou, au moins le temps d'un court metrage, a bien des a-priori que la societe, canadienne en l'occurrence, cultive a travers ses medias, sa culture et son regard sur l'immigration.
An axiom or a statement of geometry (at the time known only as Euclidian) and of arithmetic, therefore, is neither analytic nor experiential truth, but in Kant's outlook is a synthetic - a-priori judgment, i.e.
Still, an open issue is the a-priori selection of the important trial vector derivatives.
The topics include some gauge-theory and analytic preliminaries, proof of the main a-priori estimate, the construction of the half-wave operators, the dispersive estimate, decomposable function spaces and some applications, and completing the proof.
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