proportion (subs) Copy link Outline 1. portio, ōnis, f. (to be used in all adverbial phrr., though not capable of standing as equivalent for the Eng. in technical sense2. only as technical term, prōportio, ōnis (a coinage ventured by Cic. after the Gk., ἀναλογία)3. expr. by rătio (relation) with depend. gen.4. symmetria (due measurement of the parts of a figure or work in relation to each other and the whole) • proportion (subs): 1. portio, ōnis, f. (to be used in all adverbial phrr., though not capable of standing as equivalent for the Eng. in technical sense: cf. infr.): in p. (proportionally), pro portione, Cic. Verr. 4, 21, 46: in p. to the (magnitude of the) subject, pro p. rerum, id. de Or. 2, 79, 320: in a certain (defined) p., pro rata p., [also, pro rata parte], Plin. 11, 15, 15: to observe the same p., eandem servare p., Curt. 7, 11, med. 2. only as technical term, prōportio, ōnis (a coinage ventured by Cic. after the Gk., ἀναλογία): Cic. Tim. 4, fin. (audendum est enim, quoniam haec primum a nobis novantur): Varr. L. L. 10, init. (where however only the form proportione, occurs: which need imply no nom. case proportio): Vitr. 3, 1, init. (thus defined, Proportio est ratae partis membrorum in omni opere totiusque commodulatio, ex qua ratio efficitur symmetriarum). 3. expr. by rătio (relation) with depend. gen.: the p.s (of measurement) which appear to be necessary in all works, mensurarum rationes quae in omnibus operibus videntur necessariae esse, Vitr. 3, 1, 5; cf. ib. § 1, ratio symmetriarum. 4. symmetria (due measurement of the parts of a figure or work in relation to each other and the whole): Vitr. 1, 2, 3, sq.: Plin.: v. symmetry. Phr.: to be in perfect p. (of the parts of a building), convenientissimum habere commensuum responsum, Vitr. 3, 1, 3. cf. ib. § 4, ita natura composuit corpus hominis, uti pro portionibus membra ad summam ejus figurationem respondeant: to promise [so much] to the privates, and in p. to the centurions, [tantum] militibus polliceri, et pro rata parte centurionibus, Caes. B. C. 1, 17, fin.: Cic.: the subs. is sometimes omitted (not in Cic.), whence we get, pro rata: Liv. 45, 40, med.