plural epochs
: a period of time that is very important in history
The Civil War era was an epoch in 19th-century U.S. history.
The development of the steam engine marked an important epoch in the history of industry.
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“Epoch.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/epoch. Accessed 12 Jun. 2026.
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