Latin term meaning for the suit. May refer to someone temporarily appointed as a result of a court proceeding, e.g. a guardian ad litem that is appointed by the court to ensure the safety and welfare of a minor child.
Law Dictionary – Alternative Legal Definition
For the suit; for the purposes of the suit; pending the suit. A guardian ad litem is a guardian appointed to prosecute or defend a suit on behalf of a party incapacitated by Infancy or otherwise.