Abbott-Smith Manual Greek Lexicon
βραχίων (G1023)
3 βραχίων , -ὀνος, ὁ , [in LXX, β. Κυρίου , freq. for זְרוֹעַ יהוָֹה ;] the arm ; as in OT, β. Κυρίου , metaph., for the Divine power: Lk 1:51 , Jo 12:38 (LXX) , Ac 13:17 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain