pontifical

noun
  1. 1

    A book containing the offices, or formulas, used by a pontiff.

adjective
  1. 1

    Of or pertaining to a pontiff.

  2. 2

    Pompous, dignified or dogmatic.

  3. 3

    Splendid; magnificent.

  4. 4

    Of or pertaining to the pontifices of Ancient Rome.

  5. 5

    Of or relating to the building of bridges.

Source: https://en.wiktionary.org/wiki/pontifical