E (disambiguation)

Template:Sister project E is the fifth letter of the Latin alphabet.

E or e may also refer to:

Computing and computation

• E (1970s text editor), a text editor developed at the Stanford AI Lab in the 1970s
• E (complexity), a set of decision problems solvable by a Turing machine in a specific time
• /e/ (operating system), a fork of LineageOS, which in turn is based on Android
• E (PC DOS), a text editor
• E (programming language), an object-oriented programming language
• E (theorem prover), a modern, high performance prover for first-order logic
• e (verification language) hardware verification language
• Amiga E, a programming language
• E or Enlightenment (software), a free software open source manager for X Window System

Commerce and transportation

• €, the symbol for the euro, the European Union's standard currency unit
• ℮, the estimated sign, an EU symbol indicating that the weight or volume of pre-packaged goods is within specific allowable tolerances
• E, the country identifier for vehicle registration plates of Spain
• E, a Polish electric locomotive in PKP classification system
• E or Eni, an Italian oil and gas company
• E-Mark, an approval mark for automotive products in Europe under the World Forum for Harmonization of Vehicle Regulations
• Mini E, an electric hatchback built as a demonstration car
• Honda e, an electric hatchback
• E (Los Angeles Railway)
• E (New York City Subway service), a subway service in New York
• E Line (Los Angeles Metro)
• Line E (Buenos Aires Underground) of the Buenos Aires Subte
• RER E, a line in the RER of Paris
• Toei Ōedo Line, a subway service operated by the Tokyo Metropolitan Bureau of Transportation (Toei), labeled File:Toei Oedo line symbol.svg
• The official West Japan Railway Company service symbol for:
  • File:JRW kinki-E.svg San'in Main Line.
  • File:JRW san-E.svg Kisuki Line.

Geography

• E or east, one of the four cardinal directions
• E (state), a vassal state in Zhou Dynasty China (1046–256 BC)
• E Township, Maine, an unincorporated community in USA
• Mount E (Template:Langx), a stratovolcano on Oshima Peninsula, Japan
• River E, a river in Scotland
• E postcode area, for east London
• E, New Brunswick's postal code
• Hubei, abbreviated in Chinese as È (鄂), a province of China

Languages

• É (temple), Sumerian word for house or temple
• E language, a language of China
• E, the Spivak pronoun meaning "he" or "she"

Letters and other characters

• Ⓔ or ⓔ or (e) or (E) - circled-E or circled-E, see Enclosed Alphanumerics
• Latin E with diacritic:
  • É or é - e-acute, an accented letter of many Latin alphabets.
  • È or è - e-grave, another accented letter of many Latin alphabets
  • Ê or ê - e with circumflex
  • Ë or ë - e with trema (diaeresis or umlaut)
  • Ē or ē - e with macron
• e, the close-mid front unrounded vowel IPA symbol
• Tifinagh letter ⴹ
• Е and е, a letter of the Cyrillic alphabet
• Ε and ε, the letter epsilon in the Greek alphabet

Mathematics and logic

• [[e (mathematical constant)|Template:Mvar (mathematical constant)]], a mathematical constant also known as Euler's number and Napier's constant
• E notation, or scientific notation, a way of writing very large and very small numbers such as 5E7
• ∃ (a backwards E; U+2203) or existential quantification, the symbol for "there exists...", in predicate logic
• ∃!, meaning "there exists only one" (or "there exists exactly one"), see Uniqueness quantification
• E, 14 in hexadecimal and other positional numeral systems of a base of 15 or higher
• $\mathrm{E}[X]$ or expected value, the average expected outcome of a trial in probability theory
• E, the complete elliptic integral of the second kind
• Template:Mvar, the identity element
• E, the Erdős–Borwein constant
• ∈, notation indicating that an object is a member or element of a set: see Element (mathematics)

Medicine and genetics

• E number, a number code for a food additive, an EU labelling requirement
• Haplogroup E (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
• Haplogroup E (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
• E (or Glu), an abbreviation for glutamic acid or glutamate
• Vitamin E or Tocopherol, a class of chemical compounds
• The symbol for the hormone epinephrine
• E, a common abbreviation for 'Ecstasy' (a familiar name for the psychoactive recreational drug MDMA)
• Ethambutol
• Estrogen (medication)
• Estradiol (medication)

Music

• E (musical note)
• E major, a scale
• E minor, a scale
• E major chord, see Chord names and symbols (popular music)
• E (video), by Eminem
• E (Adrian Belew album), 2009
• É (album), by Duda Brack, 2015
• E (Ecco2K album), 2019
• E (Enslaved album), 2017
• E (Epik High album), 2009
• E (single album), by Big Bang, 2015
• "E", a song by Baboon from Sausage, 1992

People

• E (surname) (Template:Zh), Chinese surname
• E, a nickname of Mark Oliver Everett, musician and front man of the rock band Eels
• e, a nickname of Eric Neustadter, Former Operations Manager for Xbox Live and frequent co-host of the "Major Nelson Radio" podcast
• Mr. E (disambiguation)

Physics and engineering

• e (or e⁻) or electron, a fundamental subatomic particle
• e or elementary charge, the absolute value of the electric charge carried by a single electron.
• e or coefficient of restitution (COR), a measure of the elasticity of a collision in mechanics
• E, the symbol for energy in equations concerning mass–energy equivalence
• E or Young's modulus, a measure of stiffness in solid mechanics
• E or exa-, the SI prefix for 10¹⁸
• E-layer or the Kennelly-Heaviside layer, part of the ionosphere
• E, the symbol for an electric field
• e or orbital eccentricity, a measure of how much a conic section deviates from a circle
• E or Equal Energy spectrum, a definition of white in colour printing
• E, the electrode potential, the electromotive force of a cell built of two electrodes
  • E° or $E^{\ominus }$, the standard electrode potential

Television and film

• E!, Entertainment Television, an American cable and satellite TV network
  • E! (Australia and New Zealand), the defunct Australian and New Zealand version of American E!
• E! (Canada):
  • E! (Canadian TV system), a defunct over-the-air television system operated by Canwest from 2001 to 2009 (originally known as CH until 2007)
  • E! (Canadian TV channel), a Canadian cable/satellite specialty channel owned by Bell Media that launched in November 2010.
• E (2006 film), a 2006 Tamil film
• E (2017 film)
• E, an alias of Edna Mode, a character from the movie The Incredibles
• E, an alias of Eric Murphy (Entourage), a character from the television series Entourage
• E, the production code for the 1964 Doctor Who serial The Keys of Marinus
• E (Exempt), an unofficial category in the British Board of Film Classification rating system

Other uses

• e (novel), a 2000 comic novel by Matt Beaumont
• E band (disambiguation)
• E#, a team's elimination number
• E, or the Elohist, one of the four sources of the Torah
• E, or Everyone, a video game rating symbol used by the Entertainment Software Rating Board which is suitable for all ages.
• Dominical letter E for a common year starting on Wednesday
• E-Z notation, to indicate double bonds that two groups of higher priority are on opposite sides.
• E or EDGE, for Enhanced Data Rates for GSM Evolution
• E, the symbol of the Eredivisie logo

See also

• Eta, a Greek letter
• Ҽ, the Abkhazian letter Che
• Big E (disambiguation)
• Block E (disambiguation)
• Class E (disambiguation)
• E class (disambiguation)
• E number (disambiguation)
• E-Series (disambiguation)
• E-Type (disambiguation)
• E! (disambiguation)
• Formula E (disambiguation)
• Group E (disambiguation)
• Model E (disambiguation)
• Open E (disambiguation)