Actio In Rem
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In the civil and common law. An action for a thing; an action for the recovery of a thing possessed by another.
Inst. 4, 6, 1.
An action for the enforcement of a right (or for redress for its invasion) which was originally available against all the world, and not in any special sense against the individual sued, until he violated it
See In Rem.