I. as Relat., like ὅσος, of Number, as many, as many as . . , “ὁπόσα τολύπευσε σὺν αὐτῷ” Il.24.7 ; “πᾶσι θεοῖς . . , ὁπόσοι τὴν Διὸς αὐλὴν εἰσοιχνεῦσιν” A. Pr.121 (anap.), cf. 411, Th.927 (both lyr.); “τοσαῦτα ὁπόσα σοι φίλον” Pl.Lg.642d ; “ὁπόσους πλείστους ἐδυνάμην” X.Cyr.4.5.29, etc. : in Prose freq. ὁ. ἄν with subj., ὁπόσοις ἂν δοκῇ Foed. ap. Th.4.118, cf. Pl.Sph. 245d, etc.
2. of Quantity, as much as, of Size or Space, as great as, ὁπόσσον ἐπέσχε as far as it spread, Il.23.238 ; χθόνα . . , ὁπόσαν καὶ φθιμένοισιν κατέχειν as much as is allowed the dead to occupy, A. Th.732 (lyr.); “ὁπόσην τῆς χώρας” X.Oec.4.8 : Adverbial in dat., “ὁπόσῳ πλέον . . , τοσούτῳ πλειόνων κτλ.” Pl.Lg.649b.
3. with indefinite Particles added, ὁποσοσοῦν how great or much soever, Th.4.37,6.56, Pl.Sph. 245d : Ion. dat. pl., “ὁκόσῃσι ὦν” Hdt.5.20 ; so “ὁπόσῳ δήποτε” D.21.39 ; “ὁποσοιδηποτοῦν” Euc.9.12, al. ; “ὁπόσοσπερ” Pl.Lg.753b, X.Oec.4.5 ; “ὁποσουτινοσοῦν” for however large a price, Lys.22.15.
II. in indirect questions, “ὄφρα . . εἴπῃς ὁππόσα κήδε᾽ ἀνέτλης” Od.14.47 ; “ὁπόσαι ψάμαθοι κλονέονται, καθορᾷς” Pi.P.9.46 ; “εἰπὲ . . ὁκόσοι τοιοῦτοι [εἰσί]” Hdt.7.234 ; διαλογισώμεθα . . ὁπόσα . . πέφανται how many things he has been found to be, Pl.Sph.231d ; “ἠρώτων τὸ στράτευμα, ὁπόσον εἴη” X.An.4.4.17, cf. Pl.Sis.388e ; ἤρετο ὁπόσου asked for how much, at what price, Timocl.11.9.
III. = ὅς, Paus.9.31.5.
