1411  dunamis  doo'-nam-is

 from 1410; force (literally 
or figuratively); specially, 
miraculous power (usually by 
implication, a miracle 
itself):--ability, abundance, 
meaning, might(-ily, -y, -y 
deed), (worker of) miracle(-
s), power, strength, 
violence, mighty (wonderful) 
work.

 see GREEK for 1410