ἐπικαθίστημι

A. set upon, establish, φυλακάς D.C. 41.50; cf. ἐπικαθίζω.
2. . set over, κριτάς Pl. Ti. 72b.
3. . establish besides, τὴν τῶν ἐφόρων ἀρχήν Arist. Pol. 1313a27; ἐ. τινὰ στρατηγόν appoint as successor in command, Plb. 2.19.8, cf.J. AJ 17.2.4:—Pass., ἐπικατασταθεὶς στρατηγός Plb. 2.2.11, cf. IG 5(1).1390.12 (Andania).
4. . pay in addition, Leg.Gort. 1.47; but simply, deliver, σῖτον ἐπὶ τοὺς ὅρμους PLille 53 (iii B.C.).
5. . perform the manoeuvre of ἀντικατάστασις, Ascl. Tact. 12.11:—Pass., of troops executing the manoeuvre, ib.10.11.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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