Dictionary entry

βραχίων

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

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.†