Word Helper: An Associative Language Search Engine

What Google Knows

In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured. The moment of epoch is usually decided by congruity, or by following conventions understood from the epoch in question. The epoch moment or date is usually defined from a specific, clear event of change, an epoch event. In a more gradual change, a deciding moment is chosen when the epoch criterion was reached.

Related Definition

  1. epoch:

    n A particular period of history, or of a person's life, especially one considered noteworthy or remarkable.

    n A notable event which marks the beginning of such a period.

    n (chronology, astronomy, computing) A specific instant in time, chosen as the point of reference or zero value of a system that involves identifying instants of time.

    n (geology) A geochronologic unit of hundreds of thousands to millions of years; a subdivision of a period, and subdivided into ages (or sometimes subepochs).

    n (machine learning) One complete presentation of the training data set to an iterative machine learning algorithm.

    v (sciences, transitive) To divide (data) into segments by time period.

    n (medicine) An intensive chemotherapy regimen for treating aggressive non-Hodgkin lymphoma, consisting of etoposide, prednisolone, Oncovin (vincristine), cyclophosphamide, and hydroxydaunorubicin.


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