Crossword Genius

Religious ceremony or practice (10)

Ross

I believe the answer is:

observance

This clue is a double definition.

'religious ceremony' is the first definition.
(thesaurus)

'practice' is the second definition.
(thesaurus)

(Other definitions for observance that I've seen before include "As a rule" , "... than in the ____' (said 4)" , "ritual" .)

I've seen this clue in the Sydney Morning Herald.
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