A particular period of time in history or a person's life, often marked by notable events or particular characteristics. The Victorian era was an epoch of great industrial and cultural change.
A division of time that is a subdivision of a period and is itself divided into ages, used in geology and paleontology. The Pleistocene epoch is known for the Ice Ages and the evolution of humans.
An instant in time chosen as the origin of a particular era, used in astronomy and computing. The Unix epoch is set at January 1, 1970, 00:00:00 UTC.
In machine learning, one complete pass through the entire training dataset during the training process of an algorithm. After ten epochs, the neural network began to overfit the data.