EM, Em or em may refer to:

Arts and entertainment

Music

* EM, the

E major E major (or the key of E) is a major scale based on E, consisting of the pitches E, F, G, A, B, C, and D. Its key signature has four sharps. Its relative minor is C-sharp minor and its parallel minor is E minor. Its enharmonic equivalent, ...

musical scale * Em, the E minor musical scale * Electronic music, music that employs electronic musical instruments and electronic music technology in its production *

Encyclopedia Metallum Encyclopaedia Metallum: The Metal Archives (commonly known as Metal Archives per the URL or abbreviated as MA) is an online encyclopedia based upon musical artists who predominantly perform heavy metal music along with its various sub-genres. E ...

, an online metal music database *

Eminem Marshall Bruce Mathers III (born October 17, 1972), known professionally as Eminem (; often stylized as EMINƎM), is an American rapper and record producer. He is credited with popularizing hip hop in middle America and is critically acclai ...

, American rapper

Other uses in arts and entertainment

* ''Em'' (comic strip), a comic strip by Maria Smedstad

Companies and organizations

* European Movement, an international lobbying association *

Aero Benin Aero Benin was an airline, based in Benin but registered in Germany, which carried out land and sea freight as well as passenger services. As of 8 April 2009 it is banned within the European Union and as of July, 2012, it is inactive. Fleet Aer ...

(IATA code), a defunct airline * Empire Airlines (IATA code), a charter and cargo airline based in Idaho, US *

Erasmus Mundus The European Union's Erasmus Mundus programme (named after Erasmus, the Renaissance scholar) aims to enhance quality in higher education through scholarships and academic co-operation between the EU and the rest of the world. The three main objecti ...

, an international student-exchange program *

ExxonMobil ExxonMobil Corporation (commonly shortened to Exxon) is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil, and was formed on November 30, ...

, a large oil company formed from the merger of Exxon and Mobil in 1999 *

La République En Marche! Renaissance (RE), previously known as La République En Marche ! (frequently abbreviated LREM, LaREM or REM; translated as "The Republic on the Move" or "Republic Forward"), or sometimes called simply En Marche ! () as its original name, is a l ...

(sometimes shortened to "En Marche!"), a major French political party

Economics

* Emerging markets, nations undergoing rapid industrialization

Language and typography

Language

* M, a letter of the modern Latin alphabet, in English and other languages *

Em (Cyrillic) Em (М м; italics: ) is a letter of the Cyrillic script. Em commonly represents the bilabial nasal consonant , like the pronunciation of in "him". Common Glagolitic script is "Ⰿ and Ⱞ" It is derived from the Greek letter Mu (Μ μ). ...

(М / м), a letter of the Cyrillic alphabet * Em (digraph), a digraph in Portuguese * Em, the third-person singular oblique Spivak pronoun

Typography

* em (typography), a unit of measurement *

em dash The dash is a punctuation mark consisting of a long horizontal line. It is similar in appearance to the hyphen but is longer and sometimes higher from the baseline. The most common versions are the endash , generally longer than the hyphen b ...

, a dash that is one em wide * em space or mutton, a space that is one em wide

Management

Emergency management Emergency management or disaster management is the managerial function charged with creating the framework within which communities reduce vulnerability to hazards and cope with disasters. Emergency management, despite its name, does not actuall ...

, a discipline that studies dealing with and avoiding risks * Energy management, planning and operation of energy production and energy consumption units *

Environmental management Environmental resource management is the management of the interaction and impact of human societies on the environment. It is not, as the phrase might suggest, the management of the environment itself. Environmental resources management aims ...

, the management of the interaction of human societies with the environment

Places

* El Monte, California, a city in the United States * El Monte, Chile, a city in Chile

Science

Biology

* Effective microorganisms, a series of products intended to improve soil quality and plant growth * Extracellular matrix, the connective tissue supporting cells in multicellular organisms *

Membrane potential Membrane potential (also transmembrane potential or membrane voltage) is the difference in electric potential between the interior and the exterior of a biological cell. That is, there is a difference in the energy required for electric charges ...

(''E''_m), of a cell

Computing

* , emphasis

HTML element An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). The first used version of HTML was written by Tim Berners-Lee in 1993 ...

* End of medium, ISO C0 control code ^Y * Empirical modelling * em (typography), a unit of measurement in Web design * eM Client E-Mail client

Medicine

Emergency medicine Emergency medicine is the medical speciality concerned with the care of illnesses or injuries requiring immediate medical attention. Emergency physicians (often called “ER doctors” in the United States) continuously learn to care for unsche ...

, a medical specialty dealing with acute illnesses and injuries that require immediate attention * Erythema multiforme, a skin condition that usually follows an antecedent infection or drug exposure *

Erythromelalgia Erythromelalgia or Mitchell's disease (after Silas Weir Mitchell) is a rare vascular peripheral pain disorder in which blood vessels, usually in the lower extremities or hands, are episodically blocked (frequently on and off daily), then become ...

, a disorder that typically affects the skin of the feet and/or hands, causing redness, heat and pain * Extensive metabolizer, a term used in pharmacogenomics to refer to individuals with normal metabolic activity

Physics

Exametre The following are examples of orders of magnitude for different lengths. __TOC__ Overview Detailed list To help compare different orders of magnitude, the following list describes various lengths between 1.6 \times 10^ metres and 10^ ...

or exameter (Em), an SI unit of length equal to 10¹⁸ metres * Electromagnetic spectrum, the range of all possible frequencies of electromagnetic radiation *

Electromigration Electromigration is the transport of material caused by the gradual movement of the ions in a conductor due to the momentum transfer between conducting electrons and diffusing metal atoms. The effect is important in applications where high direc ...

, the transport of conducting solid material caused by electric current through it * Electromagnetism, one of the fundamental physical forces * Electromechanics, combines electrical engineering and mechanical engineering

Other uses in science and technology

Nikon EM The Nikon EM is a beginner's level, interchangeable lens, 35 mm film, single lens reflex (SLR) camera. It was manufactured by Nippon Kogaku K. K. (today Nikon Corporation) in Japan from 1979 to 1982 (available new from dealer stock until circ ...

, an SLR camera made by the Nikon Corporation in the late 1970s * Electron microscope, a type of microscope that uses electrons to "illuminate" a specimen and create an enlarged image *

Electron multiplier An electron multiplier is a vacuum-tube structure that multiplies incident charges. In a process called secondary emission, a single electron can, when bombarded on secondary-emissive material, induce emission of roughly 1 to 3 electrons. If an ele ...

, a vacuum-tube structure that multiplies incident charges by means of secondary emission *

Atlantic Equatorial mode The Atlantic Equatorial Mode or Atlantic Niño is a quasiperiodic interannual climate pattern of the equatorial Atlantic Ocean. It is the dominant mode of year-to-year variability that results in alternating warming and cooling episodes of sea su ...

, a climate pattern of the Atlantic Ocean * Expectation–maximization algorithm, an algorithm for finding maximum likelihood estimates of parameters in probabilistic models

Other uses

* Electrician's mate, an occupational rating in the U.S. Navy and U.S. Coast Guard *

David Em David Em (born 1952) is an American artist known for his pioneering breakthroughs in computer art. Early life David Em was born in 1952 in Los Angeles, California. His father was a petroleum engineer and his mother was an illustrator and water ...

(born 1952), an American computer art pioneer * EM gauge, a scale used in model railways * '' Etymologicum Magnum'', in the bibliography of the largest Byzantine lexicon {{disambiguation