Easton's Bible Dictionary (1897)
Fellowship with God (Gen. 18:17-33; Ex. 33:9-11; Num. 12:7, 8), between Christ and his people (John 14:23), by the Spirit (2 Cor. 13:14; Phil. 2:1), of believers with one another (Eph. 4:1-6). The Lord’s Supper is so called (1 Cor. 10:16, 17), because in it there is fellowship between Christ and his disciples, and of the disciples with one another.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
COMMUN'ION . 1 Cor 10:16. Intimate fellowship and communication, such as is expressed in John 15:1-7 and John 17:10, John 15:21-26; Rom 12:4-5; 2 Cor 13:14; 1 John 1:3. As the ordinance of the Lord's Supper furnishes both the opportunity for and the motive to this mutual love and confidence, John 13:34; John 15:12, it is called, by way of distinction, "the holy communion."