ER

ER or Er may refer to:
Places
English Republic, alternative name for the Commonwealth of England
Eritrea (ISO 3166-2 two letter country code)
United States
East Rochester, New York
Erie, Pennsylvania
People
Er (biblical person), the eldest son of Judah in the biblical book of Genesis
Nie Er (1912–1935), Chinese composer
Elliot Rodger (July 24, 1991 – May 23, 2014), English-American incel mass shooter
A Royal cypher representing a monarch
Elizabeth Regina (ER), the royal cypher of Elizabeth I
Edward Rex (ER / EVIIR), the royal cypher of Edward VII
Edward Rex (ER / EVIIIR), the royal cypher of Edward VIII
Elizabeth II Regina (EIIR), the royal cypher of Elizabeth II
Fictional characters
Er, a character in Plato's Myth of Er
Arts, entertainment and media
Music
Er, an album by Nils Petter Molvær
"ER" (song), a 2012 single by Japanese boy band Kanjani Eight
"ER", a song by Royce da 5'9" featuring Kid Vishis from Success Is Certain
Periodicals
Chico Enterprise-Record, the daily newspaper of Chico, California
Television
ER (TV series), a 1994–2009 American television medical drama series
E/R, a 1984–1985 American television sitcom
Businesses and organizations
Astar Air Cargo (IATA designator ER)
Eastern Railway (India)
Eldorado Reno, a hotel and casino in Reno, Nevada
Eldorado Resorts, a gaming company located in Reno, Nevada
Entre Ríos Railway in Argentina (reporting mark ER)
Estonian Reform Party
United Russia, or Yedinaya Rossiya, a Russian political party
Finance and banking
ER, abbreviation of exchange rate
ER, abbreviation of expense ratio
Language
Er (Cyrillic) (Р / р), a letter of the Cyrillic alphabet corresponding to the Latin letter "R"
Er (cuneiform), a sign in cuneiform writing
"er", a filler word in English
Er, alternate spelling for Yer (Ъ / ъ), the hard-sign letter of the Cyrillic alphabet
Suffix -er
-er, a suffix added to adjectives or adverbs to form a comparative (e.g., fast to faster)
-er, a suffix added to a noun to indicate resident of, as in New Yorker
-er, a suffix added to a verb to make it an agent noun (e.g., cut to cutter)
Oxford "-er", a suffix used to form words like rugger and footer
Erhua (儿化), rhotacization of spoken syllables in Beijing dialect of Mandarin Chinese with the -er suffix (儿)
Science and technology
Erdős–Rényi model, a model in graph theory
Biology and medicine
Emergency room, or emergency department, in a medical facility
Endoplasmic reticulum, a type of organelle in cell biology
Er blood group system
Equine exertional rhabdomyolysis, a syndrome that damages muscle tissue in horses
Estrogen receptor, a type of protein molecule
Extraction ratio, a pharmacokinetic property
Chemistry and physics
, a representation for relative static permittivity
Electrorheological (ER) fluid, a type of chemical suspension
Enantiomeric ratio, a concept in chemistry
Erbium, symbol Er, a chemical element
Einstein-Rosen bridge (ER) relativistic wormholes
Computing
.er, country code top-level domain (ccTLD) for Eritrea
Entity–relationship model, a conceptual representation of data
Error Resilience, an audio coding method used in MPEG-4 Part 3
Other uses
Er., Hebrew abbreviation for 'Eruvin, the second tractate of Moed
Earned run, a term in the game of baseball
Emergency Response, incident response team or emergency procedure related to emergency services
English Reports of the English Courts from 1220 to 1866
See also
ERS (disambiguation)
Err (disambiguation)
Entre Ríos (disambiguation), several uses
Erro (disambiguation)
Error (disambiguation)
Ur (disambiguation)