ER

ERorErmay refer to:

Places

• English Republic, alternative name for theCommonwealth 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
• ARoyal cypherrepresenting a monarch
  • Elizabeth Regina (ER), the royal cypher ofElizabeth I
  • Edward Rex (ER / EVIIR), the royal cypher ofEdward VII
  • Edward Rex (ER / EVIIIR), the royal cypher ofEdward VIII
  • Elizabeth II Regina (EIIR), the royal cypher ofElizabeth II

Fictional characters

• Er, a character in Plato'sMyth of Er

Arts, entertainment and media

Music

• Er,an album byNils Petter Molvær
• "ER" (song),a 2012 single by Japanese boy band Kanjani Eight
• "ER", a song by Royce da 5'9 "featuring Kid Vishis fromSuccess 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 Railwayin Argentina (reporting mark ER)
• Estonian Reform Party
• United Russia,orYedinaya Rossiya,a Russian political party

Finance and banking

• ER, abbreviation ofexchange rate
• ER, abbreviation ofexpense 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", afiller wordin English
• Er, alternate spelling forYer(Ъ/ъ), the hard-sign letter of the Cyrillic alphabet
• Suffix -er
  • -er,a suffix added to adjectives or adverbs to form acomparative(e.g.,fasttofaster)
  • -er,a suffix added to a noun to indicate resident of, as inNew Yorker
  • -er,a suffix added to a verb to make it anagent noun(e.g.,cuttocutter)
  • Oxford "-er",a suffix used to form words likeruggerandfooter
  • Erhua( nhi hóa ), rhotacization of spoken syllables inBeijing dialectofMandarin Chinesewith the -er suffix ( nhi )

Science and technology

• Erdős–Rényi model,a model in graph theory

Biology and medicine

• Emergency room, oremergency 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

• $\epsilon _{r}$,a representation forrelative 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 inMPEG-4 Part 3

Other uses

• Er., Hebrew abbreviation for 'Eruvin, the second tractate ofMoed
• Earned run,a term in the game of baseball
• Emergency Response,incident response teamoremergency procedurerelated to emergency services
• English Reportsof the English Courts from 1220 to 1866

See also

• ERS (disambiguation)
• Err (disambiguation)
• All pages with titles containingERorERs
• All pages with titles containinge-r
• All pages with titles beginning withER
• All pages with titles beginning wither
• Entre Ríos (disambiguation),several uses
• Erro (disambiguation)
• Error (disambiguation)
• Ur (disambiguation)