Abbott-Smith Manual Greek Lexicon
διδακτός (G1318)
3 διδακτός , -ή, -όν ( διδάσκω ), [in LXX: Is 54:13 ( לִמּוּד ), I Mac 4:7 * ;] that can be taught . taught ; c. gen., of source of teaching (in cl., poët. only); of persons: δ. θεοῦ , Jo 6:45 (LXX) ; of things, λόγοις δ. πνεύματος , I Co 2:13 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain