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
impressē: (inpr-), adv., v. imprimo.
impressē (impressus), en appuyant : impressius C. Aur. Chron. 3, 7, 87