epoch
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- n a period marked by distinctive character or reckoned from a fixed point or event
- n (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
- n a unit of geological time that is a subdivision of a period and is itself divided into ages
- Green activists argue that we are in an geological epoch of our own making.
- The Cold War constituted a historical epoch that is remembered for the nuclear war that did not happen.
- Some great men and women like Gandhi and Mother Teresa define an epoch because they embody its highest values.