All articles starting with E

Eccentric cam

An eccentric cam is a circular plate cam with its rotating shaft mounted off-center, giving the follower simple harmonic motion with a stroke of twice the eccentricity.

Sep 29, 2026

Eccentric training

Eccentric training is a resistance training method in which muscles actively lengthen under load, building strength and muscle and rehabilitating tendon injuries such as Achilles tendinopathy.

Sep 29, 2026

Eccentric viewing

Eccentric viewing, also called eccentric fixation, is a low vision rehabilitation technique in which people with central vision loss learn to use undamaged paracentral retina instead of the fovea.

Eccentrically braced frame

An eccentrically braced frame (EBF) is a steel seismic-force-resisting system in which braces connect to a beam off-center, creating a short link that yields to dissipate earthquake energy.

Eccentricity (behavior): conduct, appearance, or speech perceived as strange or unusual relative to social norms. Also a schizotypy-trait facet in DSM-5 Psychoticism, linked to Openness and schizotypal personality disorder, distinct from mental illness itself.

Eccentricity (mathematics)

Eccentricity, in mathematics, is a single number measuring how much a conic section deviates from a circle: 0 is a circle, 1 a parabola, above 1 a hyperbola.

Ecchi (エッチ)

Ecchi (エッチ) is an anime/manga genre of playful, non-pornographic sexualized content, derived from the H of hentai, used in Japan as slang for lewdness or sex and in English fandom as a fanservice genre tag.

Eccles

Eccles, Kent (Aylesford): site of a large Romano-British villa at Rowe Place Farm, in use c. AD 55-400 with 125 rooms, later an Anglo-Saxon cemetery of about 200 burials; excavated 1962-1976 by Alec Detsicas; distinct from Eccles, Greater Manchester.

Eccles, Kent

Eccles is a village in the Medway valley in the parish of Aylesford, Kent, England, best known for the large Romano-British villa excavated at Rowe Place Farm from 1962.

Oct 22, 2026

Ecclesial Base Communities

Ecclesial base communities, or CEBs, are small lay-led Catholic groups that arose in Brazil in the late 1950s and became a defining expression of liberation theology.

Ecclesiasterion (Odeion) at Messene

Ecclesiasterion (Odeion) of Ancient Messene, also Ekklesiasterion: small theater-like assembly and performance hall in the Asclepieion, built late 3rd c. BC, 9.70 m orchestra, 21 m stage, restored 1997-2004, still hosting events.

Ecclesiastes

Ecclesiastes, also known as Kohelet, is a book of the Hebrew Bible and one of the five Megillot, read during Sukkot and famous for "vanity of vanities."

Ecclesiastical History of the English People

Bede's Historia Ecclesiastica Gentis Anglorum (Ecclesiastical History of the English People), completed 731 at Wearmouth–Jarrow, a five-book Latin history of Christianity in Britain, its manuscripts, sources, and reception.

Ecclesiastical Latin

Ecclesiastical Latin, or Church Latin, is the Latin of Catholic liturgy, theology, and canon law from the Fathers onward, marked by Greek loanwords and the Italianate pronunciation standardized in the twentieth century.

Ecclesiastical polity

Ecclesiastical polity, also known as church polity, is the operational governance structure of a church body, classically episcopal rule by bishops, presbyterian rule by elders, or congregational autonomy.

Ecclesiology

Ecclesiology is the branch of theology that studies the church: its nature, marks, structures, sacraments, authority, and mission, including Avery Dulles's six classic models of the Church.

ECCO

ECCO (ECCO Sko A/S), Danish family-owned footwear company founded 1963 by Karl and Birte Toosbuy in Bredebro; vertically integrated from tanneries to retail, known for direct-injection comfort shoes, BIOM golf line, and 101-country distribution.

Ecco the Dolphin

Ecco the Dolphin is a 1992 Sega Genesis action-adventure game created by Ed Annunziata and developed by Novotrade, starring a dolphin whose pod is lost to a waterspout; acclaimed at launch (90% magazine average) but known for brutal difficulty, with a revival by A&R Atelier announced in 2026.

Ecco the Dolphin (video game)

Ecco the Dolphin (1992, Sega Genesis/Mega Drive), also known as 3D Ecco the Dolphin on 3DS, is a Novotrade-developed underwater action-adventure created by Ed Annunziata, famous for sonar puzzles, an oxygen meter, and extreme difficulty.

Ecco the Dolphin: Defender of the Future

Ecco the Dolphin: Defender of the Future is a 2000 Sega Dreamcast action-adventure by Appaloosa Interactive, a David Brin-scripted reboot of the Ecco series, later ported to PS2 in 2002; Metacritic 84 (Dreamcast), 71 (PS2).

Ecco: The Tides of Time (エコー・ザ・ドルフィン2)

Ecco: The Tides of Time (エコー・ザ・ドルフィン2), also Ecco II, is Novotrade's 1994 Sega action-adventure sequel to Ecco the Dolphin, released on Genesis, Sega CD, Game Gear, Master System, and PC, with time-travel levels, morphing, and a Spencer Nilsen Sega CD soundtrack.

Eccrine angiomatous hamartoma

Eccrine angiomatous hamartoma (EAH), or eccrine angiomatous nevus, is a rare benign skin hamartoma of eccrine glands and capillary channels, usually on children's limbs, causing pain and localized sweating; excision is usually curative.

Ecd family

Ecd family (InterPro IPR010770, Pfam PF07093 SGT1): conserved eukaryotic proteins named for Drosophila ecdysoneless. Human member ECD/SGT1 (644 aa) regulates p53, Rb cell cycle control, pre-mRNA splicing, and ER stress.

ECD Ovonics

ECD Ovonics was the trade name of Energy Conversion Devices, an American materials science company founded in Detroit in 1960 by Stanford Ovshinsky, inventor of the Ovonic nickel-metal hydride battery.

Ecdysis

Ecdysis, also called moulting, is the shedding of the cuticle in Ecdysozoa such as arthropods and nematodes. Controlled by ecdysteroids from the Y-organ, MIH, ETH, EH, CCAP, and bursicon, it enables growth but leaves the animal vulnerable.

Ecdysone

Ecdysone, also known as α-ecdysone, is a steroid prohormone that regulates molting and metamorphosis in insects. It was first isolated in crystalline form from silkworm pupae in 1954.

Ecdysozoa

Ecdysozoa is a clade of protostome animals defined by molting, or ecdysis, that includes arthropods, nematodes, tardigrades, and related phyla, with over a million described species.

Ecdysteroid receptor

Ecdysteroid receptor (EcR): invertebrate nuclear receptor binding 20-hydroxyecdysone, functioning as an EcR-USP heterodimer, cloned 1991 in Drosophila, target of dibenzoylhydrazine insecticides and gene-switch systems.