Extended Strong's Greek Lexicon (Abbott-Smith based)
to darken
Usage: σκοτίζω (σκότος), [in LXX for חָשַׁךְ ;] to darken; in NT always pass., -ομαι, to be darkened: of the heavenly bodies, Mat.24:29, Mrk.13:24, Luk.23:45 (Rec., WH, mg.), Rev.8:12. Metaphorical, of the mind, Rom.1:21 11:10" (LXX) (cf. σκοτόω).† (AS)