1
a
: a fixed point in time from which a series of years is reckoned
b
: a memorable or important date or event
especially
: one that begins a new period in the history of a person or thing
2
: a system of chronological notation computed from a given date as basis
3
a
: a period identified by some prominent figure or characteristic feature
the era of the horse and buggy
b
: a stage in development (as of a person or thing)
c
: a large division of geologic time usually shorter than an eon
Paleozoic era
1
earned run average
2
Equal Rights Amendment
Cite this Entry
“Era.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/era. Accessed 20 Oct. 2026.
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