Pronunciation: (rek'wē-um, rē'kwē-, rā'-),[key] —n. 1. Rom. Cath. Ch. a. Also called Req'uiem Mass'. the Mass celebrated for the repose of the souls of the dead.
b. a celebration of this Mass.
c. a plainsong setting for this Mass.
2. any musical service, hymn, or dirge for the repose of the dead. Also,req'ui•em.