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Definition of ER abbreviation from the Oxford Advanced Learner's Dictionary

ER

abbreviation
 
/ˌiː ˈɑː(r)/
 
/ˌiː ˈɑːr/
(North American English)
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  1. emergency room (= the part of a hospital where people who need immediate treatment are taken)
    CultureER is also the name of a US television medical series that ran between 1994 and 2009. The programme was set in a Chicago teaching hospital. It won 22 Emmy awards, as well as the People's Choice Award for 'Favorite TV Dramatic Series' every year from 1995 to 2002.
See ER in the Oxford Advanced American Dictionary
previously
adverb
 
 
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