A priori (Latin, 'from the earlier') is a term used in philosophy and epistemology.
A priori or apriori may also refer to:
A priori language, a type of constructed language A priori estimate, in the theory of partial differential equations A priori probability, a probability derived by deductive reasoning Apriori algorithm, an algorithm used with databases aPriori Capital Partners, a private equity investment firm
See also
A posteriori (disambiguation) Priory, a monastery headed by a prior or prioress Ex-ante, a Latin phrase meaning 'before the event'