ἀλλαγή
A.
change, A. Ag. 482, etc.; ἀλλαγᾷ βίου S. OT 1206; η κäτὰ τόπον ἀ. Arist. Spir. 485a22; ἀ. θεῶν Plu. 2.166d.
II.
exchange, barter, buying and selling, Pl. R. 371b, Arist. EN 1133a19, Pol. 1257a13; pl., διὰ τὰς ἀ. for purposes of exchange, ib.1280a35.
2.
agio, whether premium or discount, Peripl.M.Rubr. 49, PEleph. 14.10 (iii B. C.), PTeb 99.2 (ii B. C.), BGU 1194.17 (i B. C.), etc.
III.
later, change of post-horses, stage, Eust. 531.21, cf. POxy. 1863.5, etc.