Extended Strong's Greek Lexicon (Abbott-Smith based)
ruler
Usage: δυνάστης, -ου, ὁ (δύναμαι), [in LXX for גִּבּוֹר, עָרִיץ, בַּיִת, etc. ;] a prince, ruler, potentate: Luk.1:52; of God (Sir.46:5, 16, 2Ma.15:3), 1Ti.6:15; of a high official (cf. δυνάσται Φαραώ, Gen.50:4), Act.8:27 (Cremer, 221).† (AS)