κατήχησις
From LSJ
English (LSJ)
εως, ἡ,
A instruction by word of mouth: generally, instruction, Hp.Praec.13, Cic.Att.15.12.2, D.H. Dem.50, Din.7, Ath.Med. ap. Orib.inc.21.6, S.E.M.1.7; διὰ τὴν κ. τῶν συνόντων by communication with companions, in bad sense, Chrysipp.Stoic.3.54, cf.55, Gal.5.463. II accompaniment of the monochord by louder instruments which drown its tune, Ptol.Harm.2.12 (pl.).
German (Pape)
[Seite 1401] ἡ, Ergötzung durch Töne, mündlicher Unterricht, Hippocr., D. Hal. de vi Dem. 50 u. Sp.; bes. in den christlichen Glaubenslehren, K. S.