a. to come into communion or fellowship, to become a sharer, be made a partner: as in Greek writings with the genitive of the thing, Hebrews 2:14 ((so Proverbs 1:11; 2 Macc. 14:25)); with the dative of the thing (rarely so in Greek writings), Romans 15:27; (1 Peter 4:13).

b. to enter into fellowship, join oneself as an associate, make oneself a sharer or partner: as in Greek writings, with the dative of the thing, 1 Timothy 5:22; 2 John 1:11; ταῖς χεῖρας τίνος, so to make another's necessities one's own as to relieve them (A. V. communicating to the necessities etc.), Romans 12:13; with the dative of person followed by εἰς τί (as in Plato, rep. 5, p. 453 a.), Philippians 4:15; followed by ἐν with the dative of the thing which one shares with another, Galatians 6:6 (κοινωνησεις ἐν πᾶσι τῷ πλησίον σου καί οὐκ ἐρεῖς ἰδίᾳ εἶναι, Epistle of Barnabas 19, 8 [ET]); cf. Winers Grammar, § 30, 8a.; (Buttmann, § 132, 8; Lightfoot or Ellicott on Galatians 1.

c. Compare: συγκοινωνέω.)