- Characterizing that kind of reasoning which deduces
consequences from definitions formed, or principles assumed, or which
infers effects from causes previously known; deductive or deductively.
The reverse of a posteriori. - Applied to knowledge and conceptions assumed, or
presupposed, as prior to experience, in order to make experience
rational or possible.
Meaning of 'a priori' (Princeton's WordNet)
1 . a priori
[ a]
Meaning (1): - involving deductive reasoning from a general principle to a necessary effect; not supported by fact