Ambrosian

Am·bro·sian

Ambrosian

a.
  1. Ambrosial. [R.]

Ambrosian

a.
  1. Of or pertaining to St. Ambrose; as, the Ambrosian office, or ritual, a formula of worship in the church of Milan, instituted by St. Ambrose.

Phrases & Compounds
Ambrosian chant
the mode of signing or chanting introduced by St. Ambrose in the 4th century.