Purgation
Purgation may refer to:

Inducing bowel movement with a laxative
The purification of the soul
In this life, see State (theology)
In Purgatory
Purgation (album), Trigger the Bloodshed album
In US patent law, purgation of misuse refers to discontinuance of a restrictive practice and dissipation of its adverse results – see B.B. Chemical Co. v. Ellis