era has definitions from the field of geology
1
[ noun ] a period marked by distinctive character or reckoned from a fixed point or event

Synonyms

epoch

Used in print

(Musical America, LXXXI:5...)

These qualities endeared him to both the musicians and the social economic haute monde which supported the concert world of the post World_War_1 , era .

(John R. Sargent, "Where To Aim Your Planning for Bigger...)

If competition beats you to_it , this exciting new product era can have real headaches in_store .

(Sports Age, 24:9...)

The long and ever increasing column of sportsmen is now moving_into a new era .

(Philip Reaves, "Who Rules the Marriage Bed?"...)

Some date it from woman suffrage , others from when women first began to challenge men in the marketplace , still others from the era of the emancipated flapper and bathtub_gin .

(James Boylan, "Mutinity"...)

Instead of quelling the dissension , as many captains of the era would have done ( Sir_Francis_Drake lopped a man 's head off under similar circumstances ) , Hudson decided to be reasonable .

2
[ noun ] Woman's first name, popularity rank in the U.S. is 1590
3
[ noun ] (geology) a major division of geological time; an era is usually divided into two or more periods

Synonyms

geological_era

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