You searched for: “era”
electron ring accelerator, ERA
A proposed particle accelerator in which protons to be accelerated are trapped by the space charge of a ring of relativisitic electrons which is then accelerated.
This entry is located in the following unit: electro-, electr-, electri- (page 52)
era, error
era (IR uh, EHR uh) (noun)
A point in time from which an event or significant period in history is marked: The popularity of the automobile marked the beginning of an era of expanding transportation options for people.
error (EHR uhr) (noun)
An act or situation based on unintentionally inaccurate information: The bank clerk noticed an error in the balance sheet of the customer.

It is an error to think that the modern era ended at the turn of the century.

This entry is located in the following unit: Confusing Words Clarified: Group E; Homonyms, Homophones, Homographs, Synonyms, Polysemes, etc. + (page 3)