from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Style of unaccompanied monophonic singing in the Catholic Church.
from the GNU version of the Collaborative International Dictionary of English
- n. See under Gregorian.
- adj. plain song, or canto fermo, a kind of unisonous music, according to the eight celebrated church modes, as arranged and prescribed by Pope Gregory I. (called “the Great”) in the 6th century.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a liturgical chant of the Roman Catholic Church
Named after Pope Gregory I (540-604), and certainly dating back to that time in some form, but the exact origin is a matter of ongoing research. (Wiktionary)