All articles starting with E
17,681 articles
Eubacterium
Eubacterium, also historically Butyribacterium, is a genus of gram-positive, non-spore-forming, obligately anaerobic rods; type species E. limosum; major gut butyrate producers including E. rectale and E. hallii, with extensive ongoing reclassification.
Eublepharis
Eublepharis (leopard geckos, fat-tailed geckos) is a South and West Asian genus of eyelid geckos (Eublepharidae) with movable eyelids and no toe pads, ranging from India to Turkey; its type species is E. hardwickii, and E. macularius is a top pet and model organism.
Euboea (Εὔβοια)
Euboea (Εὔβοια, Evvia, Negropont), the second-largest Aegean island after Crete, lies off mainland Greece. Home to Chalcis and Eretria, colonizers, the Lelantine War, and Athens' key grain source.
Euboea Fluctūs
Euboea Fluctūs (Euboea Fluctus) is a roughly 105-113 km lava flow field on Jupiter's moon Io, IAU-approved in 1985, named for the Greek island in Io's wanderings, with active volcanic deposits.
Euboea Montes
Euboea Montes is a 13.4-km-high tectonic mountain on Jupiter's moon Io at about 48°S, 336°W, second only to Boösaule Montes; formed by thrust-faulted uplift of a crustal block with a giant landslide on its northwest flank.
Eucalyptol
Eucalyptol, also known as 1,8-cineole, is a naturally occurring cyclic ether making up 60 to 85% of eucalyptus oil, used as a flavoring, fragrance, and respiratory medicine.
Eucalyptus
Eucalyptus (eucalypts) is a Myrtaceae genus of about 880 evergreen Australian tree and shrub species with operculate buds and woody capsules, including the 99.6 m Eucalyptus regnans, the world's most widely planted hardwood timber genus.
Eucalyptus bridgesiana
Eucalyptus bridgesiana, the apple box (apple gum), is an Australian Myrtaceae tree of the Great Dividing Range tablelands, glaucous juvenile leaves, seven-flowered umbels, IUCN Vulnerable A2c after 40.1% habitat decline, introduced to Hawaii.
Eucalyptus camaldulensis
Eucalyptus camaldulensis, the river red gum or Murray red gum, is an Australian Myrtaceae tree of watercourses and floodplains, the most widely distributed eucalypt with seven subspecies, flood- and groundwater-dependent, and widely planted and invasive abroad.
Eucalyptus deglupta
Eucalyptus deglupta, the rainbow eucalyptus or Mindanao gum (bagras, kamarere), is a tropical Myrtaceae tree native to the Philippines, Indonesia, and Papua New Guinea, known for peeling multicolored bark and grown for pulp and timber.
Eucalyptus diversicolor
Karri (Eucalyptus diversicolor F.Muell., 1863) is Western Australia's tallest eucalypt, reaching about 90 m in high-rainfall south-west forests from Nannup to Denmark; a strong structural timber historically exported from Karridale.
Eucalyptus globulus
Eucalyptus globulus, known as the Tasmanian blue gum, is a tall evergreen tree native to Tasmania and Victoria, widely grown for timber and eucalyptus oil.
Eucalyptus grandis
Eucalyptus grandis, flooded gum or rose gum, is a fast-growing Australian Myrtaceae tree up to 60 m, among the most widely planted eucalypts for pulp, mainly in Brazil and South Africa, hybridizing readily with E. saligna.
Eucalyptus marginata
Eucalyptus marginata, jarrah, is a tall eucalypt endemic to south-west Western Australia, dominant in jarrah forest on lateritic soils, a durable termite-resistant red timber, IUCN Near Threatened, with commercial native logging ended in 2024.
Eucalyptus nitens
Eucalyptus nitens, known as shining gum or ribbon gum, is a fast-growing eucalypt tree native to southeastern Australia and a principal pulpwood plantation species of the southern hemisphere.
Eucalyptus oil
Eucalyptus oil, also called eucalyptol-rich essential oil, is steam-distilled from Eucalyptus globulus, polybractea, or smithii leaves, contains at least 70% 1,8-cineole, and is used for cough relief but is toxic if ingested.
Eucalyptus saligna
Eucalyptus saligna, Sydney blue gum or blue gum (柳叶桉), a fast-growing Myrtaceae tree to 50 m native to Queensland and New South Wales, widely planted for timber worldwide; IUCN Least Concern, invasive-risk species in Florida.
Eucalyptus tereticornis
Eucalyptus tereticornis, the forest red gum or blue gum, is a Myrtaceae tree to 50 m native from Victoria to Papua New Guinea (6–38°S), IUCN Least Concern, widely planted for timber, pulp, oil, and honey.
Eucalyptus urophylla
Eucalyptus urophylla, Timor white gum or Timor mountain gum (ampupu), an endangered Myrtaceae tree native to the Lesser Sunda Islands and Timor-Leste, widely planted for pulp and as the E. grandis hybrid parent.
EuCd2As2
EuCd2As2 is a layered compound of europium, cadmium, and arsenic, a magnetic semiconductor with a 0.77 eV band gap once thought a magnetic topological semimetal hosting Weyl points.
EuCd2Sb2
EuCd₂Sb₂, europium dicadmium diantimonide, is a layered antiferromagnetic semiconductor of europium, cadmium, and antimony whose topology switches to a Weyl semimetal when a magnetic field polarizes the Eu spins.
Eucharist
The Eucharist, also called Holy Communion or the Lord's Supper, is the Christian sacrament in which, Catholic teaching holds, bread and wine become the body and blood of Christ.
Eucharist in the Catholic Church
The Eucharist in the Catholic Church, also called the Catholic Eucharist, is the sacrament in which consecrated bread and wine become Christ's body and blood, taught as transubstantiation.
Eucharistic adoration
Eucharistic adoration, or adoration of the Blessed Sacrament, is a Catholic devotion praying before the consecrated host, exposed in a monstrance or reserved in a tabernacle.
Eucharistic miracle
A Eucharistic miracle, also called a Miracle of the Blessed Sacrament, is a claimed visible change in the consecrated host or wine, most often bloody coloration, reported in Catholic tradition.
Eucharitidae
Eucharitidae is a family of chalcidoid wasps whose larvae all parasitize ant brood; eggs are laid on plants, and the planidium larva hitches into the ant nest.
Eucherius of Lyons
Eucherius of Lyons (Eucherius Lugdunensis, died about 449) was a Gallo-Roman aristocrat, monk of Lérins, and Bishop of Lyons known for handbooks of scriptural interpretation.
EUCHNER
EUCHNER GmbH + Co. KG is a German family-owned manufacturer of industrial safety engineering products, including safety switches, guard locking systems, and electronic key systems, founded in 1953.
Euchre
Euchre, from Alsatian Juckerspiel, is a four-player partnership trick-taking card game with a 24-card deck, bowers as top trumps, five tricks a hand, and game to 10 points, popular in the US Midwest.
Euchromatin
Euchromatin is the decondensed, gene-rich, early-replicating chromatin fraction carrying active genes, promoters, and enhancers; coined by Emil Heitz in 1928 as the lightly stained, genetically active counterpart of heterochromatin.