ep·och 
/ˈɛpək, Brit ˈi:ˌpɒk/ noun
plural ep·ochs /ˈɛpək, Brit ˈi:ˌpɒk/ noun [count] : a period of time that is very important in history
▪ The Civil War era was an epoch in 19th-century U.S. history. ▪ The development of the steam engine marked an important epoch in the history of industry. — compare era
▪ The Civil War era was an epoch in 19th-century U.S. history. ▪ The development of the steam engine marked an important epoch in the history of industry. — compare era
— ep·och·al /ˈɛpəkəl, Brit ˈɛˌpɒkəl/ adjective
▪ an epochal [=epoch-making] invention/event
/ˈɛpəkəl, Brit ˈɛˌpɒkəl/ adjective ▪ an epochal [=epoch-making] invention/event
