One who dominates or rules; a person or thing that exercises supreme control.
From 'dominate' (Latin 'dominari') + '-or' (agent noun suffix). The suffix '-or' creates a noun describing the agent or person who performs the action of dominating.
The Terminator films made 'dominator' sound modern and futuristic, but the word has deep roots—it was used in Roman times to describe generals and emperors, and in medieval texts to describe feudal lords who ruled their domains with absolute authority.
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