Definitions from Wiktionary ( )

▸ adjective:  Coming before in order or time; earlier, former, previous.
▸ adjective:  More important or significant.
▸ adjective:  (Bayesian statistics) Chiefly in prior probability: of the probability of an event: determined without knowledge of the occurrence of other events that bear on it, before additional data is collected.
▸ adverb:  Chiefly followed by to: in advance, before, previously.
▸ noun:  (Bayesian statistics) A prior probability distribution, that is, one determined without knowledge of the occurrence of other events that bear on it, before additional data is collected.
▸ noun:  (by extension) In the rationalsphere: a belief supported by previous evidence or experience that one can use to make inferences about the future.
▸ noun:  (Canada, US, law enforcement, chiefly in the plural) A previous arrest or criminal conviction on someone's criminal record.
▸ noun:  (Christianity) A high-ranking member of a religious house or religious order.
▸ noun:  In an abbey, the person ranking just after the abbot, appointed as his deputy; a prior claustral.
▸ noun:  The head of a priory (“a monastery which is usually a branch of an abbey”), or some other minor or smaller monastery; a prior conventual.
▸ noun:  The head friar of a house of friars.
▸ noun:  The head of the Arrouaisian, Augustinian, and formerly Premonstratensian religious orders.
▸ noun:  An honorary position held by a priest in some cathedrals.
▸ noun:  (historical)
▸ noun:  A chief magistrate of the Republic of Florence (1115–1569) in what is now Italy.
▸ noun:  The elected head of a guild of craftsmen or merchants in some countries in Europe and South America.
▸ noun:  (obsolete)
▸ noun:  A person who is the earliest or most prominent in a field; the chief.
▸ noun:  (business) The head of a company.
▸ noun:  A surname originating as an occupation for someone employed by a prior.
▸ noun:  An unincorporated community in Douglas County, Missouri, United States.

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