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Alexander, prince of Serbia

(Encyclopedia)Alexander (Alexander Karadjordjević) kărəjôrˈjəvĭch [key], 1806–85, prince of Serbia (1842–58), son of Karageorge (Karadjordje). He was elected to succeed the deposed Michael of Serbia. Wea...

Eshkol, Levi

(Encyclopedia)Eshkol, Levi lāˈvē ĕshˈkôl [key], 1895–1969, Israeli statesman, third prime minister of Israel, b. Ukraine; originally named Levi Shkolnik. In World War I he served in the Jewish Legion, which...

Fernández Reyna, Leonel Antonio

(Encyclopedia)Fernández Reyna, Leonel Antonio, 1953–, Dominican political leader, president of the Dominican Republic (1996–2000, 2004–12), b. Santo Domingo. He spent his childhood in New York City and later...

isopleth

(Encyclopedia)isopleth īˈsəplĕthˌ [key], line drawn on a map through all points of equal value of some measurable quantity. In many meteorologic, oceanographic, or geologic studies some physical or chemical pr...

Gregory XII

(Encyclopedia)Gregory XII, c.1327–1417, pope (1406–15), a Venetian named Angelo Correr; successor of Innocent VII. As a condition of election, Gregory promised to do everything possible to end the Great Schism,...

epinephrine

(Encyclopedia)epinephrine ĕpˌənĕfˈrīn [key], hormone important to the body's metabolism, also known as adrenaline. Epinephrine, a catecholamine, together with norepinephrine, is secreted principally by the me...

nail, in anatomy

(Encyclopedia)nail, in anatomy, the horny outgrowth shielding the tip of the finger and the toe in humans and most other primates. The nail consists of dead cells pushed outward by dividing cells in the root, a fol...

aerogel

(Encyclopedia)aerogel, any of a group of extremely light and porous solid materials; the lightest is less than four times as dense as dry air. Aerogels are produced from certain gels (see colloid) by heating the ge...

aerosol dispenser

(Encyclopedia)aerosol dispenser, device designed to produce a fine spray of liquid or solid particles that can be suspended in a gas such as the atmosphere. The dispenser commonly consists of a container that holds...

casting

(Encyclopedia)casting or founding, shaping of metal by melting and pouring into a mold. Most castings, especially large ones, are made in sand molds. Sand, mixed with a binder to hold it together, is pressed around...