All articles A–Z
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Emulsion
An emulsion is a fluid colloidal system in which droplets of one liquid are dispersed in another immiscible liquid, most commonly oil in water or water in oil.
Emulsion polymerization
Emulsion polymerization is a free-radical process that polymerizes water-insoluble monomers in water with surfactant and a water-soluble initiator, yielding a latex of about 100 nm polymer particles.
Emulsion solvent diffusion method
The emulsion solvent diffusion method, also called emulsification-diffusion, is a technique for making polymeric nanoparticles and microparticles, in which solvent diffusion into water precipitates the polymer around a drug.
Emulsion templating
Emulsion templating is a materials-processing technique where emulsion droplets serve as sacrificial templates for pores; the droplets are removed after the surrounding phase solidifies, leaving a porous material.
Emun Elliott
Emun Elliott (born 1983, Edinburgh; birth name Emun Mohammedi) is a Scottish actor trained at RSAMD, known for Black Watch, Prometheus, Star Wars: The Force Awakens, Game of Thrones, Guilt, The Gold, and Sexy Beast.
Emund the Old
Emund the Old (Emund den gamle, Emund Slemme), king of Sweden c. 1050–1060, illegitimate son of Olof Skötkonung, half-brother of Anund Jakob; last king of the old line, favored an independent Swedish church, succeeded by Stenkil.
Emutbal
Emutbal, also written Yamut-Bal, was an ancient land east of the Tigris River, rising in 1834 BC under the Amorite Kudur-Mabuk and taken over by Hammurabi in 1763 BC.
EMV
EMV, also known as Chip and PIN, is the international standard for smart payment cards named for Europay, Mastercard, and Visa, whose chips generate one-time cryptograms.
Emydidae
Emydidae, pond turtles and terrapins (Rafinesque, 1815), a monophyletic family of about 52 freshwater and semi-terrestrial turtle species in 12 genera, split into Emydinae and Deirochelyinae, native mainly to the Americas with Emys in Europe, Africa, and Asia.
Emydura
Emydura, short-necked side-necked freshwater turtles (Chelidae) of Australia and New Guinea; type species Emydura macquarii; species include krefftii, subglobosa, tanybaraga, victoriae, australis; genetically conservative, taxonomically difficult genus.
Emys
Emys (European pond turtles) is a genus of emydid freshwater turtles with two living species, the wide-ranging Emys orbicularis and the Sicilian endemic Emys trinacris, described in 2005; its generic limits are debated.
Emys orbicularis
Emys orbicularis, the European pond turtle, is a Emydidae freshwater turtle from Europe, North Africa, and western Asia; IUCN Near Threatened (Europe), Vulnerable (EU27), seven subspecies, declining from habitat loss and invasive sliders.
En (office)
En, meaning "lord", was a Sumerian title used by rulers of Uruk and, later, by high priestesses of the moon god Nanna at Ur, attested from about 3000 BC.
En (Н н) (Cyrillic)
En (Н н, эн) is a basic Cyrillic letter for /n/, encoded at U+041D/U+043D since Unicode 1.1, descended from the Greek-derived Cyrillic alphabet, and a false friend of Latin H.
EN 14214
EN 14214 is the European standard specifying requirements and test methods for biodiesel (FAME) used in diesel engines and heating, pure or as a blend component in diesel fuels such as EN 590.
EN 1990
EN 1990, titled Eurocode: Basis of structural design, is the head document of the European structural Eurocode suite, setting safety, serviceability, and durability requirements for structures.
EN 206
EN 206 is a European standard prepared by CEN titled Concrete – Specification, performance, production and conformity, covering specifying, producing, and assessing concrete; its successor parts appeared in 2026.
EN 50128
EN 50128 is a European CENELEC standard for developing software for railway control and protection systems such as interlocking and automatic train protection, first published in 2001.
EN 50160
EN 50160 is a CENELEC European standard, titled Voltage characteristics of electricity supplied by public electricity networks, defining expected voltage quality at user supply terminals.
En banc
En banc, from French "on the bench," is a procedure in which all qualified judges of a U.S. court of appeals hear or rehear a case together, governed by FRAP 35 and the consolidated Rule 40.
En Besor
En Besor is a small archaeological site in the northern Negev, Israel, where an Egyptian First Dynasty settlement served as a staging post on the route to Canaan.
En bloc resection
En bloc resection is the removal of an entire tumor in a single piece so margins can be fully examined, chiefly done by endoscopic submucosal dissection.
En bloc spondylectomy
En bloc spondylectomy is a spine oncology operation removing a tumor-bearing vertebra in one or two pieces with healthy-tissue margins, used mainly for chordomas and giant cell tumors.
En el teocalli de Cholula
"En el teocalli de Cholula" is an 1820 meditative poem by the Cuban poet José María Heredia, considered a precursor of romantic poetry in Hispanic America.
En Iniya Iyanthira
En Iniya Iyanthira is a Tamil science fiction novel by Sujatha, serialized in the 1980s, set in a future dictatorial India and starring the robotic dog Jeeno.
En la masmédula
En la masmédula is the final book of poetry by the Argentine avant-garde poet Oliverio Girondo, first published in 1954, an experiment with coined Spanish words.
En la sangre
En la sangre is an 1887 novel by the Argentine writer Eugenio Cambaceres, the Spanish American work most faithful to Zola's naturalism, dramatizing elite anxiety over immigration.
En number
The En number is a normalized error statistic used in proficiency testing to compare a laboratory's measured value with a reference value, defined in ISO 13528.
En passant
En passant, French for "in passing," is a special chess pawn capture of a pawn that has just advanced two squares, legal only on the next move.
En perseguirme, Mundo, ¿qué interesas?
"En perseguirme, Mundo, ¿qué interesas?" ("In pursuing me, World, what do you gain?") is a sonnet by the Mexican Baroque nun Sor Juana Inés de la Cruz.