- Requiescat in pace is a Latin prayer meaning rest in peace.
An example of requiescat in pace is what would be on someone's tombstone.
requiescat (in pace) definition by Webster's New World
may he or she rest (in peace): a prayer for a dead person: means “may they rest (in peace)”
Origin: Classical Latin subjunctive of requiescere (see re- and amp; quiescent); pace, ablative of pax, peace