συγκοινωνός

όν, Subst.
A. partaking jointly of, τῆς ῥίζης Ep.Rom. 11.17, cf. 1 Ep.Cor. 9.23; ἐν τῇ θλίψει Apoc. 1.9; τῆς βασιλείας μου Steph. in Hp. 1.76D.: Subst., partner, PMasp. 158.11 (vi A.D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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