Lewis Short
factĭo (noun F) : id..
* A making, doing, preparing (very rare): tabulae, quas is instituisset, cui testamenti factio nulla est,the right of making a will,Cic. Top. 11, 50; cf.: factionem testamenti habere,id. Fam. 7, 21: quae haec factio est?conduct, dealing, proceeding,Plaut. Rud. 5, 3, 15; id. Bacch. 4, 8, 2.
* (Acc. to facio, II. B.; lit., a taking part or siding with any one; hence concr.) A company of persons associated or acting together, a class, order, sect, faction, party (syn.: pars, partes, causa, rebellio, perduellio, seditio).
* In gen. (rare): cum vostris nostra non est aequa factio; Affinitatem vobis aliam quaerite,i. e. family, rank,Plaut. Trin. 2, 4, 51; cf.: neque nos factione tanta, quanta tu, sumus,id. Cist. 2, 1, 17; id. Trin. 2, 4, 66; 90; 96; id. Aul. 2, 1, 45: utrimque factiones tibi pares, Cato ap. Charis. p. 198 P.: alia (medicorum) factio coepit in Sicilia, i. e. class or school, Plin. 29, 1, 4, § 5: est et alia magices factio, a Mose pendens,id. 30, 1, 2, § 11: lascivientium,Vulg. Amos, 6, 7.
* In partic., a company of political adherents or partisans, a party, side, faction (class.; among the republican Romans usually with the odious accessory notion of oligarchical): in Gallia non solum in omnibus civitatibus atque in omnibus pagis partibusque, sed paene etiam in singulis domibus factiones sunt, earumque factionum principes sunt, qui, etc.,divisions, factions,Caes. B. G. 6, 11, 2 sq.: paucorum factione oppressus,id. B. C. 1, 22, 5; cf.: in qua (Scaevolae oratione) invidia incitatur in judicum et in accusatorum factionem,Cic. Brut. 44, 164: haec inter bonos amicitia, inter malos factio est,Sall. J. 31, 15: conspiratis factionum partibus,Phaedr. 1, 2, 4: per vim et factionem,Cic. Att. 7, 9, 4: triginta illorum consensus et factio,i. e. oligarchy,Cic. Rep. 1, 28; cf.: cum certi propter divitias aut genus aut aliquas opes rem publicam tenent, est factio: sed vocantur illi optimates,id. ib. 3, 14; 1, 44; cf. also: ut exsistat ex rege dominus, ex optimatibus factio, ex populo turba et confusio,id. ib. 1, 45: in factionis potestate,id. ib. 3, 32: principem factionis ad Philippum trahentium res,Liv. 32, 19, 2; Tac. H. 1, 13; Suet. Claud. 13.
* Scenic t. t., a division, company, or party of charioteers at the Roman races (of which there were four, named after their colors: albata, prasina, russata, veneta),Suet. Calig. 55; id. Vit. 7; 14; id. Dom. 7; Inscr. Orell. 2593; cf. Fest. p. 86 Müll.; and Anthon's Dict. of Antiq. p. 256.—Also of pantomimes, Suet. Ner. 16; and: domini factionum = factionarii,id. ib. 5; 22; Lampr. Com. 16.
Charlton T. Lewis, Charles Short, A Latin Dictionary