411 REFERENCE · Wiktionary
Sunday obligation
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
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en Christianity chiefly Roman Catholicism the obligation to attend a church service (mass) on Sundays; failing to fulfil this obligation without excuse constitutes a grave sin
en loosely the same obligation including that which applies on specified holidays of obligation (varying by diocese)