Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
ρυθμόν proportion LXX.Exod.28.15
proportions LXX.2Kgs.16.10
ρυθμοί proportions LXX.Song.7.1

Liddell-Scott-Jones

ῥυθμός (rhuthmos) a proportion G:N-M

ῥυθμός,

Ionic dialect ῥυσμός (see. below 111, IV), : (ῥέω):— any regular recurring motion (πᾶς . ὡρισμένῃ μετρεῖται κινήσει [Refs 4th c.BC+]

__I measured motion, time, whether in sound or motion, [Refs 3rd c.AD+]; ={ τῆς κινήσεως τάξις}, [Refs 5th c.BC+]; rhythm, opposed to μέτρον and ἁρμονία, [Refs 5th c.BC+]; of Prose rhythm, [Refs 4th c.BC+]
__I.2 special phrases: ἐν ῥυθμῷ in time, of dancing, marching, etc., βαίνειν ἐν . [Refs 5th c.BC+]; ἐν τῷ . ἀναπνεῖν respire regularly, [Refs 5th c.BC+]; ῥυθμὸν χορείας ὑπάγειν keep time, [Refs 5th c.BC+]; θάττονα ῥυθμὸν ἐπάγειν play in quicker time, [Refs 5th c.BC+]: plural, paces, [Refs 4th c.BC+]
__II measure, proportion or symmetry of parts, at rest as well as in motion, κατὰ τὸν αὐτὸν . [Refs 5th c.BC+]
__III generally, proportion, arrangement, order, ῥυθμῷ τινι [Refs 5th c.BC+]; οὐκ ἀπὸ ῥυσμοῦ εἰκάζω not without reason, [Refs 3rd c.BC+]
__IV state or condition of anything, temper, disposition, [Refs 7th c.BC+]; μένει.. χρῆμ᾽ οὐδὲν ἐν ταὐτῷ . [Refs 5th c.BC+]
__V form, shape of a thing, [Refs 4th c.BC+]; μετέβαλον τὸν . τῶν γραμμάτων changed the form or shape of the letters, [Refs 5th c.BC+]; of Chian boots, [Refs 5th c.BC+]; of the shape of a cup, [Refs 2nd c.AD+]; of a breastplate, [Refs 5th c.BC+]; [τοῦ θυσιαστηρίου] [LXX+3rd c.BC+]; so of the natural features of a country, [Refs 2nd c.AD+]; structure of a substance, κεγχροειδὲς τῷ ., τῷ . σπογγῶδες, [Refs 1st c.AD+]
__VI manner, fashion of a thing, Ἕλλην . πέπλων [Refs 5th c.BC+]; τίνι . φόνο; by what kind of slaughter? [Refs]; ἐν τριγώνοις ῥυθμοῖς triangular-wise, [Refs 5th c.BC+]; by position in [Refs 6th c.BC+]

LSJ Scripture Refs: LXX.2Kgs.16.10