a posteriori

Definitions of a posteriori

1. adjective

   involving reasoning from facts or particulars to general principles or from effects to causes
   “a posteriori demonstration”

   synonyms:

   synthetic, synthetical

   of a proposition whose truth value is determined by observation or facts

   inductive

   of reasoning; proceeding from particular facts to a general conclusion

   antonyms:

   a priori

   involving deductive reasoning from a general principle to a necessary effect; not supported by fact

   analytic, analytical

   of a proposition that is necessarily true independent of fact or experience

   deductive

   involving inferences from general principles
2. adjective

   requiring evidence for validation or support
   synonyms:

   empiric, empirical

   derived from experiment and observation rather than theory
3. adverb

   derived from observed facts
   antonyms:

   a priori

   derived by logic, without observed facts