Meanings of roman dictator in English

What power was intrusted to a Roman Dictator?

And there was hardly one of the principal officers of either army who came off unwounded, except the Roman dictator.

"I thought a Roman dictator was appointed only for emergencies, and only for six months."

The Latin general, on seeing the cohort of the exiles almost surrounded by the Roman dictator, hurried up some companies of reserves to the front.

But Adrian Goldsworthy, in his entertaining talk on the Roman dictator, told a Hay audience what Caesar did say as he was being bloodily murdered.