CONGREGATE Meaning of CONGREGATE in English ■ verb gather into a crowd or mass.OriginME: from L. congregat- , congregare 'collect (into a flock), unite', from con- 'together' + gregare (from grex , greg- 'a flock'). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004