|1.||a period of time considered as being of a distinctive character; epoch|
|2.||an extended period of time the years of which are numbered from a fixed point or event: the Christian era|
|3.||a point in time, esp one beginning a new or distinctive period: the discovery of antibiotics marked an era in modern medicine|
|4.||geology a major division of geological time, divided into several periods: the Mesozoic era|
|[C17: from Latin aera counters, plural of aes brass, pieces of brass money]|
|era (îr'ə) Pronunciation Key
A division of geologic time, longer than a period and shorter than an eon.