2. (R. C. Ch.)
(a) A psalm sung or chanted immediately before the
collect, epistle, and gospel, and while the priest is
entering within the rails of the altar.
(b) A part of a psalm or other portion of Scripture read
by the priest at Mass immediately after ascending to
the altar.
3. (R. C. Ch.) An anthem or psalm sung before the Communion
service.
4. Any composition of vocal music appropriate to the opening
of church services.