First of all, let's discuss what an epoch is. An epoch is generally a reference point used to measure time. It has many uses, including measurement of time in the computer world.
As to its origin, it's insignificant. If someone does know, however, he/she should improve this page right away.
epoch - era
The root word of "epoch" is from the Greek word "epokhē," meaning a point in time or a period in history.
The middle ages was an epoch of intellectual opression.
Epoch
Era.
The word epoch is the part of a time period that is chosen as the beginning or reference point. It is used to chronologically place order of events.
An epoch is a period in time. Describing some, usually, extended event or life but of no specific length. For example you could say the epoch when the earth was forming, or the epoch of the renaissance.
The epoch that humans are currently in is called the Holocene epoch. Scientists argue that the epoch we are in is actually the Anthropocene epoch, which means 'new man.'
time, epoch, tense
Epoch of Unlight was created in 1994.
Eon, Era, and Epoch: APEX :D
The Epoch Times was created in 2000.