pontifical

adjective

1. having to do with a pontifex or a high priest
2. having to do with or celebrated by a bishop or other high-ranking prelate: a pontifical Mass
3. having to do with the pope; papal
4. having the pomp, dignity, or dogmatism of a pontiff; sometimes, specif., arrogant or haughty

noun

1. a pontiff's vestments and insignia
2. a book of offices for a bishop