a_posteriori
1. [ adjective ] requiring evidence for validation or support
Related terms: empirical
2. [ adverb ] derived from observed facts
Related terms: a_priori
3. [ adjective ] (logic) involving reasoning from facts or particulars to general principals or from effects to causes
Examples:

"a posteriori demonstration"

Related terms: a_priori inductive synthetic
Similar spelling:   apostrophic
  apostrophize
  apostrophise