A period of 1000 years is referred to as a millennium. The term is derived from the Latin words ‘mille’ meaning ‘thousand’ and ‘annus’ meaning ‘year’. Just as a century is defined as 100 years, a millennium encapsulates a full thousand years, making it a significant time frame in history.
Throughout history, various milestones and events are often categorized in millennia, allowing historians and researchers to discuss developments that occur across long periods of time. It serves as a useful benchmark to understand the broad strokes of human history, societal changes, and advancements in technology.