epoch

/ˈɛpək/
noun
  1. A long period of time in history or in a person's life, marked by important events or developments.
    • Many historians consider the fall of the Roman Empire the start of a dark epoch.
    • The Renaissance was an epoch of great artistic and scientific achievement.
    • The invention of the internet began a new epoch in communication.
  2. A particular point in time that is the start of a new period or era.
    • The signing of the peace treaty marked an epoch in the region's history.
    • For her, graduating college was an epoch that changed everything.
    • The discovery of penicillin was an epoch in modern medicine.
  3. In geology, a unit of time within a period, used to describe rock layers and Earth's history.
    • The Pleistocene epoch is known for its ice ages and the evolution of humans.
    • The rock formations in this canyon date back to the Jurassic epoch.
    • Geologists study fossils from the Eocene epoch to understand ancient climates.
Antonyms
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