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Noun: era  e-ru or eer-u [N. Amer], eer-u [Brit]
  1. A period marked by distinctive character or reckoned from a fixed point or event
    - epoch
  2. A major division of geological time; an era is usually divided into two or more periods
    - geological era
Noun: ERA
  1. (baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitched
    - earned run average

Derived forms: eras

Type of: criterion, geologic time, geological time, measure, period, period of time, standard, time period, touchstone

Part of: aeon, eon

Encyclopedia: Era, TX