Lewis Short
actĭo (noun F) : ago
* A doing, performing, acting, action, act.
* In gen.: non modo deos spoliat motu et actione divina, sed etiam homines inertes efficit,Cic. N. D. 1, 37; 2, 16; virtutis laus omnis in actione consistit,id. Off. 1, 6; id. Fin. 5, 19, 54.—With subject. gen.: ad eas res parandas, quibus actio vitae continetur,active, practical life,id. Off. 1, 5: corporis,id. Div. 1, 32: mentis,id. N. D. 1, 17; and with object. gen.: itaque nec actio rerum illarum (the public performance of those things) apertā petulantiā vacat, id. ib. 1, 35, 127; ib. 1, 43: actio ullius rei,id. Ac. 2, 33, 108; and so plur.: periculosae rerum actiones sunt, Off. 1, 2, 4; hence: actio gratiarum,the giving of thanks,id. Fam. 10, 19 (cf.: gratias agere).
* Esp.
* Public functions, civil acts, proceedings, or duties.
* In gen., Cic. Fam. 9, 8: tribunorum,their official duties,Liv. 5, 11; so, consularis,id. 4, 55 al.: actiones nostras scriptis mandamus,Cic. Off. 2, 1; Caes. B. C. 1, 5.—Hence negotiation, deliberation: discessu consulum actio de pace sublata est,Cic. Att. 9. 9.—Esp.
* Gesticulation connected with oral delivery.
* An action, suit, process (in abstr.), with a gen. more precisely defining it, e. g. actio furti, injuriarum; also with de: actio de repetundis, de arboribus succisis, etc.: actionem alicui intendere,Cic. Mil. 14: instituere,to bring an action against one,id. Mur. 9: multis actiones (processes, suits) et res (the property in suit) peribant, Liv. 39, 18 al.
* In dramatic lang., the action, the connection or series of events, the plot, in a play: habet enim (fabula) varios actus multasque actiones et consiliorum et temporum,Cic. Fam. 5, 12, 6.
* A pleading of a case (spoken or written); so Cic. calls his Orats. against Verres, actiones, pleas, simply dividing them into actio prima and actio secunda: actio causae,Cic. Caecin. 2, 4; actiones litium,id. Phil. 9, 5, 11; so, Suet. continuae actiones, Ner. 15: in prima parte actionis,Quint. 10, 1, 20 al.
* Permission for a suit: dare alicui actionem (which was the right or duty of the praetor or judge),Cic. Verr. 2, 2, 27.
* The judicial management of a suit, the trial, the day of trial: prima, altera, tertia,Cic. Verr. 1, 30; 2, 2, 6.
* Of an orator; the exterior air or bearing, the action, delivery: Demosthenem ferunt ei qui quaesivisset quid primum esset in dicendo, actionem; quid secundum, idem et idem tertium respondisse,Cic. Brut. 38; cf. id. de Or. 1, 18; so that it often includes even the voice: actio ejus (Pompeii) habebat et in voce magnum splendorem et in motu summam dignitatem,id. Brut. 68; cf. id. Or. 17: est actio quasi sermo corporis,id. de Or. 3, 59; cf. ib. 2, 17 al.—Hence, also
* Of an actor, action: in quo tanta commoveri actio non posset,id. de Or. 3, 26.
Charlton T. Lewis, Charles Short, A Latin Dictionary