Meaning of orate fratres

o•ra•te fra•tres

Pronunciation: (ô-rä'te frä'tres), [key]
— Rom. Cath. Ch. Rom. Cath. Ch.
  1. the call to prayer, addressed by the celebrant of the Mass to the people just before the Secret.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.