Examine individual changes

'{{wiktionary|er|Er|ER|-er|'er|er-}} '''ER''' or '''Er''' may refer to: {{TOC right}} ==Arts, entertainment, and media== ===Fictional characters=== * Er, a character in Plato's ''[[Myth of Er]]'' ===Music=== * ''Er'', an album by [[Nils Petter Molvær]] * [[ER (song)|"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)|''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) * [[Edinaya Rossiya]], a Russian political party * [[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]] ==Finance and banking== * Abbreviation of [[exchange rate]] * Abbreviation of [[expense ratio]] ==Language== * [[Er (Cyrillic)]] ('''Р'''&nbsp;/&nbsp;'''р'''), a letter of the Cyrillic alphabet corresponding to the Latin letter "R" * "er", a [[filler (linguistics)]] * Er, alternate spelling for [[Yer]] ('''Ъ'''&nbsp;/&nbsp;'''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 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) ==People== * [[Er (biblical person)]], the eldest son of Judah in the biblical book of Genesis * [[Nie Er]] (1912–1935), Chinese composer * [[Èrs people]], an ancient people inhabiting parts of what are now northern Armenia, northeast Turkey, southern Georgia, and northwest Azerbaijan * ''Edward Rex'' (ER or E<small>VII</small>R), the royal cypher of King [[Edward VII]] * ''Elizabeth Regina'' (ER or E<small>II</small>R), the [[royal cypher]] of [[Queen Elizabeth II]] ==Places== * [[East Rochester, New York]], a town in the United States * [[Eritrea]] (ISO 3166-2:ER country code) ==Science and technology== ===Biology and medicine=== * [[Emergency department|Emergency room]], a medical facility specializing in acute, emergency care, usually found in a hospital or other primary care center * [[Endoplasmic reticulum]], a type of organelle in cell biology * [[Equine exertional rhabdomyolysis]], a syndrome that damages muscle tissue in horses * [[Estrogen receptor]], a type of protein molecule * [[Extraction ratio]], a pharmacokinetic property ===Other uses in science and technology=== * <math>\epsilon_r</math>, a representation for [[relative static permittivity]] * [[Electrorheological fluid|Electrorheological (ER) fluid]], a type of chemical suspension * [[Enantiomeric ratio]], a concept in chemistry * [[Entity–relationship model]], a conceptual representation of data * [[Erbium]], chemical element with symbol Er * [[Erdős–Rényi model]], a model in graph theory * Error Resilience, an audio coding method used in [[MPEG-4 Part 3]] ==Other uses== * [[.er]], country code top-level domain (ccTLD) for Eritrea * Er., Hebrew abbreviation for 'Eruvin, the second tractate of [[Moed]] * [[Earned run]], a term in the game of baseball * Emergency Response, [[Incident response team|team]] or [[Emergency procedure|processes]] related to emergency services * [[English Reports]] of the English Courts from 1220 to 1866 ==See also== * [[Entre Ríos (disambiguation)]], several uses * [[Err (disambiguation)]] * [[Erro (disambiguation)]] * [[Error (disambiguation)]] * [[Ur (disambiguation)]] {{Disambiguation}}'