heroic hexameter is the right metre

ὄγκος (B), o(,
A. bulk, size, mass of a body, “μελέων ἀριδείκετον ὄ.” Emp. 20.1 ; “ἀέρος ὄ.” Id.100.13 ; “σφαίρης ἐναλίγκιον ὄγκῳ” Parm.8.43 : freq. in Pl., “μήτε ὄγκῳ μήτε ἀριθμῷ” Tht.155a ; τὸν . . ὄ. τοῦ ἀριθμοῦ their total number, Lg.737c ; τὸν τῶν σαρκῶν ὄ. ib.959c ; σμικρᾶς πόλεως ὄ. a city of small size, Plt.259b ; “ἔχθρας ὄ. μέγαν” Lg.843b ; θαυμαστὸν ὄ. ἀράμενοι τοῦ μύθου taking on my shoulders a monstrous great story, Plt.277b, etc.: freq. also in Arist., the space filled by a body, opp. τὸ κενόν, Ph.203b28, al. ; “ἴσος τὸν ὄ.” in bulk, GC 326b20 ; “ὄγκῳ μικρόν” EN1178a1, etc.
b. flatulent distentions, Diocl.Fr.43 (pl.).
2. bulk, mass, body, ὄ. φρυγάνων a heap of faggots, Hdt. 4.62 ; ὄ. μαλθακός mass or roll of something soft, Hp.Art.26 ; σμικρὸς ὄ. ἐν σμικρῷ κύτει, of a dead man's ashes, S.El.1142 ; γαστρὸς ὄ., of a child in the womb, E.Ion15 ; “ὄ. πλήρης φλεβίων” Arist.HA 515b1 : pl., “ὄγκοι” bodies, material substances, Id.Metaph.1085a12, 1089b14 ; also ὁ ὄ. τῆς φωνῆς the volume of the note, Id.Aud.804a15.
3. a bushy top-knot, Poll.4.133.
4. the human body, “τῆς χολῆς ἀναχεομένης εἰς τὸν ὄ.” Ruf.Anat.30, cf. Sor.1.26, Plu.2.653f, Gal.1.272.
II. metaph., bulk, weight, trouble, “βραχεῖ σὺν ὄ.” S.OC 1341.
2. weight, dignity, pride, and in bad sense, self-importance, pretension, ὄ. ὀνόματος μητρῷος pride in the name of mother, Id.Tr. 817 ; ὄγκον αἴρειν exalt one's dignity, Id.Aj.129 ; “βραχὺν . . μῦθον οὐκ ὄγκου πλέων” of pretension, Id.OC1162 ; “μείζον᾽ ὄ. δορὸς ἤ φρενῶν” E. Tr.1158 ; “ἔχει τιν᾽ ὄ. Ἄργος Ἑλλήνων πάρα” Id.Ph.717 ; “ἐς ὄ. βλέπειν τύχης” Id.Fr.81 ; “τοῖς ζῶσι δ᾽ ὄγκος” Id.Rh.760 ; “ὁ τῶν ὑπεροπτικῶν ὄ.” Isoc.1.30 ; “τῷ . . γένους ὄγκῳ” Pl.Alc.1.121b ; “πραγμάτων ὄ.” Epicur. Fr.548 ; “τῆς ἀρχῆς τὸ μέγεθος καὶ ὁ ὄ.” Plu.Fab.4 ; “ὄγκον περιθεῖναί τινι” Id.Per.4, etc.
3. of style, loftiness, majesty, “ὄ. τῆς λέξεως” Arist. Rh.1407b26 ; “ὁ τοῦ ποιήματος ὄ.” Id.Po.1459b28, cf. Demetr.Eloc.36, al. : in bad sense, bombast, “ὁ Αἰσχύλου ὄ.” Plu.2.79b.
III. in Philos., particle, mass, body, Epicur.Ep.1p.16U., Nat.12G., Asclep. Bith. ap. S.E.M.9.363 ; so in the physiology of the Methodics, ὄγκοι καὶ πόροι, = molecules and pores, Id. ap. Gal.1.499.
Henry George Liddell. Robert Scott. A Greek-English Lexicon. revised and augmented throughout by. Sir Henry Stuart Jones. with the assistance of. Roderick McKenzie. Oxford. Clarendon Press. 1940.