Lexical Definition

‎διδακτός‎ didaktós (did-ak-tos') taught ^G:A
from ‎διδάσκω‎

taught, which … teacheth.

• (subjectively) instructed, or (objectively) communicated by teaching

Abbott-Smith

διδακτός, -ή, -όν (< διδάσκω), [in LXX: Is 54:13 (לִמּוּד), I Mac 4:7 * ;]
1. that can be taught.
2. taught; c. gen., of source of teaching (in cl., poët. only);
(a) of persons: δ. θεοῦ, Jo 6:45 (LXX);
(b) of things, λόγοις δ. πνεύματος, I Co 2:13.†

Abbott-Smith References

Liddell-Scott-Jones

διδακτός-τός, ή, όν,

also ός, όν [Refs 5th c.BC+]:

__I of things, taught, learnt, ἅπαντα γάρ σοι τἀμὰ νουθετήματα κείνης διδακτά of her teaching, [NT+5th c.BC+]
__I.2 that can be taught or learnt, τὰ δ. things which may be taught by study and experience, [Refs 5th c.BC+]; opposed to ἄρρητα, [Refs 5th c.BC+]; δίδαξον.. εἰ διδακτά μοι if I may learn them, [Refs]; κἄστ᾽ οὐ διδακτόν (i.e. τὸ τῆς τύχης) [Refs 5th c.BC+]
__II of persons, taught, instructed, πολέμου [LXX]; also δ. θεοῦ taught by God,[LXX+NT]

_{LSJ Scripture Refs: 1Cor.2.13 ☩ LXX.Isa.54.13 ☩ John.6.45}