expost facto Meaning, Definition & Usage

Ex"post` fac"to, Ex"post`fac"to (Also<
  • Expost facto
  • Expostfacto
)
Etymology
L., from what is done afterwards.
Definitions
  1. (Law) From or by an after act, or thing done afterward; in consequence of a subsequent act; retrospective. Burrill. Kent.

Webster 1913