potentate

One who has the power and position to rule over others; a monarch.

One who dominates or leads a group or an endeavor.

A person who possesses power or sway; a prince; sovereign; monarch; ruler.

A power; state; sovereignty.

A trade-name of an explosive consisting of a mixture of finely divided guncotton (about 45 to 65 per cent.) with potassium nitrate.