Quick Definition
συμπολίτης, ου, ὁ n.m. a fellow citizen
Strong's Definition
a native of the same town, i.e. (figuratively) co-religionist (fellow-Christian)
Derivation: from G4862 (σύν) and G4177 (πολίτης);
KJV Usage: fellow- citizen
UBS Dictionary of the Greek New Testament
noun, m. | -ου | πολιτεύομαι
11.72 · Groups and Classes of Persons and Members of Such Groups and Classes · Socio-Political
fellow citizen a fellow member of a socio-political unit The expression in EPH 2:19 may also be rendered as ‘you join with God’s people as fellow citizens together with them’ or ‘you and God’s people are all persons who belong to the same place’ or as in some languages, ‘... people of God’s country.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
συμ-πολίτης [T WH ovr (cf. σύν, IT. fin.)], -ov, 6, (see συμμαθητής and reff.), possessing the same citizenship with others, a fellow-citizen: συμπολῖται τῶν ἁγίων, spoken of Gentiles as received into the communion of the saints i.e. of the people consecrated to God, opp. to ξένοι κ. πάροικοι, Eph. ii. 19. (Eur. Heracl. 826; Joseph. antt. 19, 2,2; Ael. v. h. 3, 44.)
Mounce Concise Greek Dictionary
συμπολίτης sympolitēs 1x
a fellow citizen, met. Eph. 2:19*
Abbott-Smith Greek Lexicon
* συν-πολίτης (Rec. σνμπ-), -ου, ὁ a fellow-citizen: pl., σ. τ. ἁγίων, opp. to ξένοι κ. πάροικοι, Eph 2:19 (Eur.; C.I., 6446; condemned by Atticists; v. Rutherford, NPhr., 255 f.).†
Moulton & Milligan — Vocabulary of the Greek NT
συνπολίτης, “ fellow-citizen,” a comp%. condemned by the Atticists (Rutherford WP p. 255f.), but found in Eph 219: cf. BGU Il. 632° (ii/A.D.) παρὰ ᾿Αντωνε[ίζνου tod συνπολ[ε]ίτου ἡμῶν, Preisigke 4317°%° (c. A.D. 200) ὕβρισμαι. . παρὰ πάντων τῶν συμπολιτῶν, and P Oxy VIII. 1119!® (a.p. 254) συμ]πολεῖται ἡμέτεροι προσῆλθον ἡμεῖν διὰ βιβλειδίων, ‘‘ our fellow-citizens have approached us in a petition ” (Ed.). The verb occurs in what appears to be a school exercise written on the verso of P Oxy I. 79 (A.D. 181-192), where, after a reference to the death of someone, the writer continues σὺν τοῖς o[tplatidtais . . . συμπολιτευόμεθα. See also OG/S 143° (B.C. 146-116), with note.
Liddell-Scott-Jones — Greek-English Lexicon
συμπολίτης (sumpolitēs) — fellow citizen. συμπολῑτ-ης, ου, ὁ, fellow-citizen, [Refs 5th c.BC+]: feminine συμπολῑτ-ῖτις, [Refs 1st c.BC+]