Definition:
era
- erasystem of chronological notation computed from a given date as basis
- eraearned run average
- eraperiod of history
- eralarge division of geologic time usually shorter than an eon Paleozoic era
- eraan important period of time, also EPOCH, EPOCHA
- eraa fixed point in time from which a series of years is reckoned
- erastage in development (as of a person or thing)
- eramemorable or important date or event
- eraperiod identified by some prominent figure or characteristic feature the era of the horse and buggy