ratiō ōnis, f RA-, a reckoning, numbering, casting up, account, calculation, computation: ut par sit ratio acceptorum et datorum: quibus in tabulis ratio confecta erat, qui numerus domo exisset, etc., Cs.: auri ratio constat, the account tallies: rationem argenti ducere, reckoning: pecuniae habere rationem, to take an account: ratione initā, on casting up the account, Cs.: mihimet ineunda ratio est: (pecuniam) in rationem inducere, bring into their accounts: aeraria, the rate of exchange (the value of money of one standard in that of another): rationes ad aerarium continuo detuli, rendered accounts: rationes cum publicanis putare: rationes a colono accepit: longis rationibus assem in partīs diducere, calculations, H.

—A list, manifest, protocol, report, statement: cedo rationem carceris, quae diligentissime conficitur.

—A transaction, business, matter, affair, concern, circumstance: re ac ratione cum aliquo coniunctus: in publicis privatisque rationibus, Cs.: nummaria: popularis: comitiorum: ad omnem rationem humanitatis: meam.

—Plur., with pron poss., account, interest, advantage: alquis in meis rationibus tibi adiungendus: alienum suis rationibus existimans, etc., inconsistent with his interests, S.

—Fig., a reckoning, account, settlement, computation, explanation: rationem reddere earum rerum: secum has rationes putare, T.: initā subductāque ratione scelera meditantes, i. e. after full deliberation: quod posteaquam iste cognovit, hanc rationem habere coepit, reflection: totius rei consilium his rationibus explicabat, ut si, etc., upon the following calculation, Cs.: ut habere rationem possis, quo loco me convenias, etc., i. e. means of determining: semper ita vivamus, ut rationem reddendam nobis arbitremur, must account to ourselves: si gravius quid acciderit, abs te rationem reposcent, will hold you responsible, Cs.

—Relation, reference, respect, connection, community: (agricolae) habent rationem cum terrā, quae, etc., have to do: cum omnibus Musis rationem habere: omnes, quibuscum ratio huic est.

—A respect, regard, concern, consideration, care: utriusque (sc. naturae et fortunae) omnino habenda ratio est in deligendo genere vitae: (deos) piorum et impiorum habere rationem: sauciorum et aegrorum habitā ratione, Cs.: propter rationem brevitatis, out of regard for: habeo rationem, quid a populo R. acceperim, consider: neque illud rationis habuisti, provinciam ad summam stultitiam venisse? did you not consider?

—Course, conduct, procedure, mode, manner, method, fashion, plan, principle: tua ratio est, ut . . . mea, ut, etc.: defensionis ratio viaque: itaque in praesentiā Pompei sequendi rationem omittit, Cs.: in philosophiā disserendi: ut, quo primum curreretur, vix ratio iniri possit, Cs.: hoc aditu laudis vitae meae rationes prohibuerunt, plan of life.

—Arrangement, relation, condition, kind, fashion, way, manner, style: ratio atque usus belli, the art and practice of war, Cs.: novae bellandi rationes, Cs.: quorum operum haec erat ratio, etc., Cs.: rationem pontis hanc instituit

— tigna bina, etc., Cs.: iuris: haec eadem ratio est in summā totius Galliae, Cs.: eādem ratione, quā pridie, ab nostris resistitur, Cs: quid refert, quā me ratione cogatis?: nullā ratione, Cs.: tota ratio talium largitionum genere vitiosa est, principle.

—The faculty of computing, judgment, understanding, reason, reasoning, reflection: Ita fit, ut ratio praesit, appetitus obtemperet: homo, quod rationis est particeps, causas rerum videt: lex est ratio summa: ut, quos ratio non posset, eos ad officium religio duceret: si ratio et prudentia curas aufert, H.: mulier abundat audaciā, consilio et ratione deficitur: Arma amens capio, nec sat rationis in armis, V.: ratione fecisti, sensibly.

—Ground, motive, reason: quid tandem habuit argumenti aut rationis res, quam ob rem, etc.: nostra confirmare argumentis ac rationibus: noverit orator argumentorum et rationum locos: ad eam sententiam haec ratio eos deduxit, quod, etc., Cs.: rationibus conquisitis de voluptate disputandum putant: Num parva causa aut prava ratiost? reason, excuse, T.

—Reasonableness, reason, propriety, law, rule, order: omnia, quae ratione docentur et viā, reasonably and regularly: ut ratione et viā procedat oratio: quae res ratione modoque Tractari non volt, H.: intervallis pro ratā parte ratione distinctis, divided proportionally by rule: vincit ipsa rerum p. natura saepe rationem, system.

—A theory, doctrine, system, science: haec nova et ignota ratio, solem lunae oppositum solere deficere: Epicuri, doctrine: Stoicorum: ratio vivendi . . . ratio civilis, the art of living . . . statesmanship.

—Knowledge, science. si qua (est in me) huiusce rei ratio aliqua.

—A view, opinion, conviction: Mea sic est ratio, T.: cum in eam rationem pro suo quisque sensu loqueretur: cuius ratio etsi non valuit, N.