Extended Strong's Greek Lexicon (Abbott-Smith based)
immortality
Usage: ἀθανασία, -ας, ἡ (ἀ-θάνατος, undying; V. MM, VGT, see word), [in LXX: Wis.3:4 4:1 8:13,17 15:3, 4Ma.14:5 16:13 * ;] immortality: 1Co.15:53,54 1Ti.6:16 (cf. Cremer, 285 f.).† (AS)