The late period of the Roman Empire, following the principate, during which the emperor's rule became more explicitly autocratic and remaining vestiges of the Roman Republic were removed from the formal workings of government; the reign of any particular emperor during this period.
To govern, rule or control by superior authority or power
To exert an overwhelming guiding influence over something or someone
To enjoy a commanding position in some field
To overlook from a height.
Ruling; governing; prevailing
Predominant, common, prevalent, of greatest importance.
Designating the follicle which will survive atresia and permit ovulation.