A hegemon is a leading or major power. The United States has long been a hegemon in world politics.

If you enjoy an edge over people who would otherwise be your peers, you might be a hegemon: that is, someone who enjoys hegemony, a predominating influence over others. Hegemons are powerful entities. In America, big business is a hegemon. In computers, Apple is a hegemon. For a long time in the NBA, Michael Jordan was a hegemon. Only the powerful can claim to be hegemons. This word suggests dominance and often a little more power than others would prefer.

Definitions of hegemon
  1. noun

    a leading or paramount power

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    type of:

    great power, major power, power, superpower, world power

    a state powerful enough to influence events throughout the world

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