LogeionPerseus analysis of δύο:
δύο (two): indeclform (numeral)
LSJ entry
δύο
δύο [ῠ],
also δύω in Ep.,
Eleg. and late, SIG 1231
(Nicomedia, iii/ iv A. D.),
not in Ion. Inscrr. nor in Trag. (
δύο ῥοπάς shd. be read in E. Hel. 1090),
nor in Att. Prose or Inscrr.: Lacon. acc. δύε IG 5(1).1;
Thess. fem. δύας ib.9(2).517: gen. and dat. δυοῖν Hp. Vict. 1.3,
but f.l. in Hdt. 1.11,
91 [used as monos. in S. OT 640,
cf. δώδεκα for δυώδ-];
later Att. also δυεῖν (esp. in fem. gen.) found in codd. of E. El. 536,
cited fr. Th. by Ael.Dion.(?)
Fr. 372,
cf. 1.20 (cod. Laur.); Boeot. δουῖν Corinn. Supp. 2.54;
later δυσί, δυσὶν ἡμέραις Th. 8.101 codd., δυσὶν ἡμέρῃσι v.l. in Hp. Acut.(Sp. ) 67;
δυοῖν ὄμμασι καὶ δυσὶν ἀκοαῖς Arist. Pol. 1287b27,
cf.Men. 699,
SIG 344.26
(Teos, iv B.C.),
etc.: early Att. Inscrr. have δυοῖν IG 12.3.10,
al., later δυεῖν SIG 2587.286,
IG 22.463.78,
al., from cent. iii on δυσί ib.1028.27, al.; Ion. gen. δυῶν GDI 5653d9 (
Chios),
Hdt. 1.94,
130,
etc., dat. δυοῖσι ib. 32,
7.104;
δυῶν also Dor.,
Leg.Gort. 1.40,
Tab.Heracl. 1.139;
δυοῖς Leg.Gort. 7.46.—
Used indecl., like ἄμφω, by Hom. (who has no gen. or dat. δυοῖν)
, τῶν δύο μοιράων Il. 10.253;
δύω κανόνεσσι 13.407,
etc.; so in Hdt. and Att.,
δύο νεῶν Hdt. 8.82;
δύο ζεύγεσι Id. 3.130;
δύο νεῶν Th. 3.89;
δύο πλέθρων X. An. 3.4.9;
with dual, δύο μναῖν dub. l. Id. Mem. 2.5.2;
but not in Trag. and rare in Com., ἔτεσιν δύο Alex. 105;
δύʼ ἔτεσιν Damox. 2.3:
not in Att. Inscrr. before the Roman period, IG 3.1443,
al.:—Α. two,
Il. 1.16,
etc.; in Hom.,
δύο and δύω are sts. joined with plural Nouns, δύο δʼ ἄνδρες 18.498,
al.; also in Trag., δύο κριούς S. Aj. 237 (lyr.); in Att. Prose, δύο τέχνας Pl. Grg. 464b;
but δυοῖν is rare with plural Nouns, ὀρθοστάταις δυοῖν IG 2.1054.64;
ἕνα καὶ δύο one or two,
a few, Il. 2.346;
δύʼ ἢ τρεῖς Ar. Pax 829,
cf. X. HG 3.5.20;
εἰς δύο two and two,
Id. Cyr. 7.5.17;
σὺν δύο two together, Il. 10.224,
Hdt. 4.66;
δύο ποιεῖν τὴν πόλιν to split the state into two,
divide it, Arist. Pol. 1310a4.