G0056
ἀγνωσία
ignorance
ἀγνωσία, -ας, ἡ (γινώσκω), [in LXX: Job.35:16 (בִּבְלִי־דַּעַת), Wis.13:1, 3Ma.5:27 * ;] ignorance (opposite to γνῶσις): 1Co.15:34, 1Pe.2:15 (see Hort in l.; MM, VGT, see word).† (AS)
Full Thayer's lexicon entry
ἀγνωσία — agnōsía
ἀγνωσία, (ας, ἡ (γνῶσις), want of knowledge, ignorance: 1Pe 2:15; 1Co 15:34 (Wis 13:1)
2 occurrences
I Corinthians (1), I Peter (1)