Bailly
v. Ἀμφικτιονία.
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LSJ
or Ἀμφικτυονεία, ἡ, Amphictyonic League, D. 5.19, 11.4, cf. Did. in D. 4.6; τὸ δίκαιον τῆς Ἀ. IG 4.589 (Argos); of the League of Calauria, Str. 8.6.14; — τῆς τῶν Λοκρῶν Ἀ. τὸ τρίτον μέρος a third share in the representation of Locri in the Amphictyony, Klio 16.163.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)