1. long periods of time marked by distinctive characteristics or events
Usage: plural of epoch
2. major divisions of geological time
Usage: geology

Examples

• The Renaissance and Enlightenment were two important epochs in European history.
• Scientists study different geological epochs to understand Earth’s development.
• The Industrial Revolution marked the beginning of new technological epochs.
• These ancient artifacts date back to several different epochs.
• The Paleocene and Eocene are epochs within the Paleogene period.
• Historians divide human civilization into distinct epochs based on major developments.