ὅτι2
I.that, Lat. quod, after Verbs of seeing or knowing, thinking or saying, used in quoting another person's words, ἠγγέλθη, ὅτι Μέγαρα ἀφέστηκε news came that Megara has revolted (where we say had), Thuc.; ἀποκρινάμενοι ὅτι πέμψουσι (where we say that they would send), id=Thuc.;— in orat. obliq., with opt., ἠπείλησ᾽ ὅτι βαδιοίμην I threatened that I would go, Ar.
II.pleonast. before the very words of a speech (where in our idiom the Conjunction is left out, its place being supplied by inverted commas), καὶ ἐγὼ εἶπον, ὅτι ἡ αὐτή μοι ἀρχή ἐστι and I said: "I will begin at the same point, " Plat.
III.ὅτι in attic may represent a whole sentence, esp. in affirm. answers, οὐκοῦν τὸ ἀδικεῖν κάκιον ἂν εἴη τοῦ ἀδικεῖσθαι; Answ. δῆλον δὴ ὅτι (i. e. ὅτι κάκιον ἂν εἴη), id=Plat.; so in the affirmations conveyed by οἶδ᾽ ὅτι, οἶσθ᾽ ὅτι, etc., and in δηλονότι (i. e. δῆλόν ἐστιν ὅτι) used as adv.
IV.οὐχ ὅτι . . , ἀλλὰ or ἀλλὰ καὶ . . , not only, but also . . , Xen.; οὐ μόνον ὅτι ἄνδρες, ἀλλὰ καὶ γυναῖκες Plat.:— οὐχ ὅτι, not followed by a second clause, means although, οὐχ ὅτι παίζει καί φησι id=Plat.
V.as a Causal Particle for that, because, seeing that, inasmuch as, Lat. quod, Hom., etc.