An Epoch (periodization)
- Epoch (reference date), a moment in time chosen as the origin of a particular era
- Epoch (geology) or geologic epoch, a span of time smaller than a "period" and larger than an "age"
- Epoch (cosmology) or cosmologic epoch, a phase in the development of the universe since the Big Bang
- Epoch (astronomy), a moment in time used as a reference for the orbital elements of a celestial body
- Epoch (race), racial periods in Blavatsky's esoteric theory of the root races
- Epoch, a step in the training process of an artificial neural network
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Famous quotes containing the word epoch:
“Old age cannot be cured. An epoch or a civilization cannot be prevented from breathing its last. A natural process that happens to all flesh and all human manifestations cannot be arrested. You can only wring your hands and utter a beautiful swan song.”
—Renee Winegarten (b. 1922)