plural of ERA

plural of era

(US) Initialism of Equal Rights Amendment. / (EU, railways) Initialism of European Railway Agency (called today the European Union Agency for Railways)

(baseball) Initialism of earned run average, a baseball statistic. / (electronics) Initialism of electrically reconfigurable array. / (military) Initialism of explosive reactive armor.

A time period of indeterminate length, generally more than one year. / (geology) A geochronologic unit of tens to hundreds of millions of years; a subdivision of an eon, and subdivided into periods.

plural of geologic era

plural of classical era

A calendrical system dating from after the death of the Buddha (taken as 543 BCE).

Synonym of Planck epoch

Common Era