A.any clear, distinct sound, esp. voice of men, Il.5.234, etc.; of the Sirens, Od.12.41,159; “φθόγγῳ ἐπερχόμεναι” 18.199; “φ. ἀραῖον οἴκοις” A.Ag.237 (lyr.); “γόων οὐκ ἀσήμονες φ.” S.OC1669; φ. οἰκείου κακοῦ voice, telling of . . , Id.Ant.1187; τὸν Αἵμονος φ. ib.1218, cf. 1214; of birds, “ἀλεκτρυόνων φ.” Thgn.864; “ἀγνῶτα . . φ. ὀρνίθων” S.Ant.1001, cf. 424; “φθόγγος οὔτ᾽ ὀρνίθων οὔτε θαλάσσης” E.IA9 (anap.); “κυνῶν καὶ προβάτων καὶ ὀρνέων” Pl.R.397a.
2. speech, “Ἑλλάδος φθόγγον χέουσαν” A.Th.73; φ. ἔμμετρος, opp. πεζά, poetical speech, Phld.D.3.13; utterance, saying, Trag.Adesp.417.
II. generally, sound, “ἀνέμων” Simon.37.11; “δαίμονος πεδαρσίου . . πτερωτὸς φ.” Ar.Av.1198 ( = Trag.Adesp.47); φωνῆς μὲν οὔ, φθόγγου δὲ μετέχοντά τινος, of semi-vowels, Pl.Phlb. 18c, cf. Arist.Aud.801b2, 804b9; “ἄνευ φθόγγου καὶ ἠχῆς” Pl.Ti.37b, cf. Epicur.Ep.1p.32U.; “εἰς τοὺς φ. καὶ τὰς συλλαβάς” Pl.Cra.389d, cf. Plu.Alex.27, Gal.15.6.
2. of musical sounds, “λωτὸς φθόγγον κελάδει” E.El.716 (lyr.); “λύρας” Pl.Lg.812d, etc., cf. “φθόγγους ἀλύρους θρηνοῦμεν” Alex. 162.6 (anap.).
b. pl., notes on a musical instrument; strings of lyre, D.Chr.10.19; stops of flute, Philostr.VA5.21; cf. Corn.ND14.