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The definition of era

4 Definitions of: era

    1. noun, a period of time considered as being of a distinctive character; epoch
    2. noun, an extended period of time the years of which are numbered from a fixed point or event
    3. noun, a point in time, esp one beginning a new or distinctive period
    4. noun, geology a major division of geological time, divided into several periods
    5. Show me some examples of this word: era
    6. Show me the etymology of the word: era
 

From Collins