γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
acĕto: āre, 1, v. a., old form for agito, acc. to Paul. ex Fest. p. 23 Müll.; cf. the letter C.
(1) ăcētō, āvī, āre (acetum), intr., devenir aigre : Ps. Apul. Herb. 3, 8