Abbott-Smith Manual Greek Lexicon
καθό (G2526)
3 καθό (= καθ’ ὅ ), adv. , [in LXX: Le 9:5 , 15 ( אֲשֶׁר ), I Es 1:50 , Si 16:20 , Ba 1:6 , II Mac 4:16 *;] as , according as : Ro 8:26 , II Co 8:12 , I Pe 4:13 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain