Post-Factum
Defined in 3 dictionaries — Cyclopedic (1922), Ballentine's (1916), Kinney (1893)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
An after-act; an act done afterwards; a post-act.
Ballentine's Law Dictionary
James A. Ballentine · 1916
An act done afterward.
A Law Dictionary and Glossary
George C. Kinney · 1893
or postfactum, I. An after-act; an act done afterwards.