C. L. Stevenson and H. P. Grice on expression prior to communication

commūnĭcātĭo , ōnis, f. communico (several times in Cic., elsewh. rare),

I.a making common, imparting, communicating.

I. In gen.: “largitio et communicatio civitatis,” Cic. Balb. 13, 31: “quaedam societas et communicatio utilitatum,” id. Fin. 5, 23, 65: “consilii,” id. Fam. 5, 19, 2: “sermonis,” id. Att. 1, 17, 6: criminis cum pluribus, Tiro ap. Gell. 7, 3, 14: “nominum,” i. e. the like appellation of several objects, Plin. 24, 14, 80, § 129: “juris,” Dig. 23, 2, 1: “damni,” ib. 27, 3, 1, § 14.—

II. In rhet., a figure of speech, = ἀνακοίνωσις, in accordance with which one turns to his hearers, and, as it were, allows them to take part in the inquiry, Cic. de Or. 3, 53, 204; Quint. 9, 1, 30; 9, 2, 20 and 23.