διάτονος. [194] 8, [196] 4. Diatonic. Lat. diatonicus. For the diatonic scale see n. on [194] 8.
διαφορά. [68] 21, [152] 14, etc. Difference, variety. Lat. differentia.
διαχάλασμα. [230] 24. Loosening. Lat. resolutio. Cp. Epicrates (ap. Athen. xiii. 570 B) on Lais in her old age: ἐπεὶ δὲ δολιχὸν τοῖς ἔτεσιν ἤδη τρέχει | τὰς ἁρμονίας τε διαχαλᾷ τοῦ σώματος.
διελκυσμός. [204] 3. Struggle, tussle. Lat. luctatio. Cp. argum. Aristoph. Acharn. εἶτα γενομένου διελκυσμοῦ κατενεχθεὶς ὁ χορὸς ἀπολύει τὸν Δικαιόπολιν, i.e. “a tussle (wrangle) arises, in which the Chorus is overborne and lets go Dicaeopolis.”
διέξοδος. [150] 1. Outlet, egress. Lat. exitus.
διερείδειν. [220] 3. To thrust apart. Lat. disiungere. The object of the thrusting apart (or separation) is to give each word a firm position (as with the combination of strut and tie in Caesar’s bridge over the Rhine, for which see E. Kitson Clark in Classical Review xxii. 144-147). So διερεισμός [222] 10, [224] 14. In [202] 9 διερείδεσθαι = conniti.
δίεσις. [126] 20. A quarter-tone, or any interval smaller than a semitone. Lat. diesis. As to the reason for the disappearance of the quarter-tone from our modern musical system see n. on [194] 7 (extract from Macran’s Harmonics of Aristoxenus). See, further, L. and S., s.v. δίεσις and λεῖμμα. The word occurs also in de Lys. c. 11 ὥστε μηδὲ τὴν ἐλαχίστην ἐν τοῖς διαστήμασι δίεσιν ἀγνοεῖν. Suidas defines δίεσις as τὸ ἐλάχιστον μέτρον τῶν ἐναρμονίων διαστημάτων. Cp. Vitruv. de Arch. v. 3.
διευκρινεῖν. [208] 4. To determine. Lat. diiudicare.
διευστοχεῖν. [124] 17. To go straight to the mark. Lat. recta ad scopum tendere. For the genitive cp. Polyb. ii. 45 (of Aratus) ἄνδρα δυνάμενον πάσης εὐστοχεῖν περιστάσεως.