1. oratorian - Noun
2. oratorian - Adjective
Oratorical.
See Fathers of the Oratory, under Oratory.
Source: Webster's dictionaryThe phrase soprano maschio (male soprano), which could also mean falsettist, occurs in the Due Dialoghi della Musica of Luigi Dentice, an Oratorian priest, published in Rome in 1553. Source: Internet