E is the fifth letter of the Latin alphabet.
E or e may also refer to:
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 the 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 Medicine and genetics E number , a number code for a food additive, an EU labelling requirementHaplogroup E (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup Haplogroup E (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup E or glutamic acid , an amino acid, glutamate E. coli or Escherichia coli, a bacterium commonly found in the lower intestine; some are pathogenic, others are not E. coli or Entamoeba coli, a non-pathogenic parasite frequently found in the human intestine Vitamin E or Tocopherol , a class of chemical compounds The symbol for the hormone epinephrine 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°, the standard electrode potential Mathematics and logic e (mathematical constant), also known as Euler's number and Napier's constant, a transcendental number and the base of natural logarithms, approximately equal to 2.718 E notation, or scientific notation, a way of writing very large and very small numbers ∃ (a backwards E) 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 E or Expected value, the average expected outcome of a trial in probability theory e, the identity element Computing and computation E (complexity), a set of decision problems solvable by a Turing machine in a specific time E (PC DOS), a text editor E (programming language), an object-oriented programming language e (verification language) hardware verification language E (text editor), a text editor originally developed at the Stanford AI Lab (Stanford University) in the 1970s E Text Editor, a Windows text editor E equational theorem prover, a modern, high performance prover for first-order logic Amiga E , a programming languageE or Enlightenment (software), a free software open source manager for X Window System E (musical note) E major , a scaleE minor , a scaleE major chord, Chord names and symbols (popular music) E, a nickname of Mark Oliver Everett , musician and front man of the rock band Eels [e] , an album from Korean hip-hop group Epik HighE (video), by EminemE (Adrian Belew album), 2009E (Big Bang album)Television and film E!, Entertainment Television, an American cable and satellite TV network E! (Australia), the Australian 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 filmE (2017 film)E (Malayalam film), a future filmE, or Edna Mode, a character from the movie The Incredibles E, or Eric Murphy , a character from the television series Entourage E Township, Maine , an unincorporated community in USARiver E , a river in ScotlandE or east , one of the four cardinal directions E postcode area , for east LondonE, New Brunswick 's postal code E (state), a vassal state in Zhou Dynasty China (1046–256 BC) E language , a language of ChinaÉ (temple), Sumerian house or temple E, the Spivak pronoun meaning "he" or "she" e, the close-mid front unrounded vowel IPA symbol Е, a letter of the Cyrillic alphabet E (name) (Chinese: 鄂 ), a Chinese family name or given name Weinan E, a Chinese mathematician E, a nickname of Mark Oliver Everett, musician and front man of the rock band Eels e, a nickname of Eric Neustadter , Operations Manager for Xbox Live and frequent co-host of the "Major Nelson Radio" podcast Mr. E (disambiguation) Letters and other characters Ⓔ or ⓔ or (e) or (E) - circled-E or circled-E, see Enclosed Alphanumerics É or é - e-acute , an accented letter of many Latin alphabets. È or è - e-grave , another accented letter of many Latin alphabets. e (novel), a 2000 comic novel by Matt BeaumontE band (disambiguation) E#, a team's elimination number E, slang name for the recreational drug Ecstasy, also called MDMA 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 (ESRB) 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. 
