Abbott-Smith Manual Greek Lexicon
ἀθανασία (G110)
3 ** ἀθανασία , -ας, ἡ ( ἀ-θάνατος , undying ; V. MM, VGT , s.v.), [in LXX: Wi 3:4 4:1 8:13 , 17 15:3 , IV Mac 14:5 16:13 *;] immortality : I Co 15:53 , 54 I Ti 6:16 (cf. Cremer, 285 f.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain