Congregatio

(Latin) assembly, union.
Found on http://www.hestories.info/greco-roman-world-glossary.html

congregatio

assembly, society, union.
Found on https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html

congregatio

Latin, meaning: assembly, society, union.
Found on http://archives.nd.edu/ccc.htm
No exact match found