Abbott-Smith Manual Greek Lexicon
ἀόρατος (G517)
5 ἀόρατος , -ον ( ὁράω ), [in LXX: Ge 1:2 ( תֹּהוּ ), Is 45:3 ( מִסְתָּר ), II Mac 9:5 *;] unseen , invisible : Ro 1:20 , Col 1:15 , 16 , I Ti 1:17 , He 11:27 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain