γραμματιστική
From LSJ
μοῦνοι Ἑλλήνων δὴ μουνομαχήσαντες τῷ Πέρσῃ → alone of all Greeks we met the Persian singlehandedly, alone of all Greeks having fought singlehanded with the Persians
English (LSJ)
ἡ, elementary teaching, Phld.Rh. 1.70S., S.E.M.1.44, Them.Or.23.297d (also γραμματιστικά, τά, Id.Or.21.251a): but distinguished from γραμματική as more elementary, Ph.1.540.
Russian (Dvoretsky)
γραμμᾰτιστική: ἡ (sc. τέχνη) искусство обучения грамоте Sext.