term:

Reconvention

reconvention n

[French, from Middle French, from re- again, back + convention agreement between two parties]
in the civil law of Louisiana
: the act or process of making a counterclaim [judicial efficiency is served by requiring the defendant to assert in all causes of action against the plaintiff "Ballex v. Naccari, 657 So. 2d 511 (1995)"]

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.