- from a general law to a particular instance; valid independently of observation.
- existing in the mind prior to and independent of experience, as a faculty or character trait.
- not based on prior study or examination; nonanalytic: an a priori judgment.
- relating to or involving deductive reasoning from a general principle to the expected facts or effects
- known to be true independently of or in advance of experience of the subject matter; requiring no evidence for its validation or support
- statistics See prior probability, mathematical probability
