era

noun
  1. A long and distinct period of history with a particular feature or characteristic. noun
    The Victorian era was marked by significant industrial and cultural changes.
    The digital era has transformed how we communicate and access information.
  2. A system of chronology dating from a particular noteworthy event. noun
    The Christian era began with the birth of Jesus Christ.
    In geological terms, the Mesozoic era is known for the dominance of dinosaurs.