Church rite (7)
'church rite' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mass that I've seen before include "Large amount, body" , "congregate for > service" , "Church service - crowd" , "Throng" , "Bulk; religious service" .)
'church rite' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for liturgy that I've seen before include "Form of worship" , "ritual" , "Prescribed forms for church services" , "Form of religious service" , "Religious rite" .)