from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An unaccompanied, monophonic liturgical chant.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Style of
unaccompanied monophonic singingin the Catholic Church.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a liturgical chant of the Roman Catholic Church
from The American Heritage® Dictionary of the English Language, 4th Edition
[After Saint Gregory I.]
from Wiktionary, Creative Commons Attribution/Share-Alike License
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.
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