Abbott-Smith Manual Greek Lexicon
διετής (G1332)
1 ** διετής , -ές ( δίς , ἔτος ), [in LXX: II Mac 10:3 * ;] lasting two years . two years old : ἀπὸ δ. (sc. παιδός , or neuter; cf. I Ch 27:23 , ἀπὸ εἰκοσαετοῦς ), Mt 2:16 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain