ἀρχηγός

όν, Subst.
A. beginning, originating, λόγος ἀρχηγὸς κακῶν E. Hipp. 881; primary, leading, chief, Τροίας ἀ. τιμάς Id. Tr. 196 (lyr.); δύο φλέβες ἀ. Arist. PA 666b25.
II. as Subst., founder, of a tutelary hero, S. OC 60; as fem., ancestral heroine, B. 8.51; τοῦ γένους Isoc. 3.28, cf. D.S. 5.56; τῆς πόλεως θεὸς ἀ. τίς ἐστιν Pl. Ti. 21e; founder of a family, Arist. EN 1162a4.
2. prince, chief, Δία ἀ. θεῶν B. 5.179, cf. A. Ag. 259; chief captain, leader, Ἑλλάνων Simon. 138; Βεβρύκων Theoc. 22.110; ἀ. ἱερέων CIG 6798 (Dijon), cf. 2882 (Milet.).
3. first cause, originator, κοπίδων Heraclit. 81; πράγματος X. HG 3.3.4, cf. Din. 3.7, Isoc. 12.101; συγχύσεως SIG 684.8 (Dyme, ii B.C.); φόνου POxy. 1241 iii 35; σωτηρίας Ep.Hebr. 2.10; Θαλῆς ὁ τῆς τοιαύτης ἀ. φιλοσοφίας Arist. Metaph. 983b20; τῆς τέχνης Sosip. 1.14; τὸ ἀ. the originating power, Pl. Cra. 401d, cf. Sph. 243d; primary, fundamental, ἀρχηγὸν ἡ φωνή Phld. Po. 2.19.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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