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hydrogen fluoride

(Encyclopedia) hydrogen fluoride, chemical compound, HF, a colorless, fuming liquid or colorless gas that boils at 19.54℃. It is miscible with water and is soluble in benzene, toluene, and…

Marcus Aurelius

(Encyclopedia) Marcus Aurelius (Marcus Aelius Aurelius Antoninus)Marcus Aureliusmärˈkəs ôrēˈlēəs [key], 121–180, Roman emperor, named originally Marcus Annius Verus. He was a nephew of Faustina, the…

Louis VI, king of France

(Encyclopedia) Louis VI (Louis the Fat), 1081–1137, king of France (1108–37). He succeeded his father, Philip I, with whom he was associated in government from c.1100. He firmly established his…

Liebknecht, Wilhelm

(Encyclopedia) Liebknecht, WilhelmLiebknecht, Wilhelmvĭlˈhĕlm [key]Liebknecht, Wilhelm lēpˈkənĕkht [key], 1826–1900, German socialist leader and journalist. His participation in the revolution in…

Merian, Maria Sibylla

(Encyclopedia) Merian, Maria SibyllaMerian, Maria Sibyllamärēˈä zĭbüˈlä māˈrēän [key], 1647–1717, German naturalist, entomologist, and painter of insects and flowers, b. Frankfurt; daughter of…

Meitner, Lise

(Encyclopedia) Meitner, LiseMeitner, Liselēˈzə mītˈnər [key], 1878–1968, Austrian-Swedish physicist and mathematician. She was professor at the Univ. of Berlin (1926–33). A refugee from Germany after…

Kahlo, Frida

(Encyclopedia) Kahlo, FridaKahlo, Fridafrēˈdä käˈlō [key], 1907–54, Mexican painter, b. Coyoacán as Magdalena Carmen Frieda Kahlo y Calderón. As a result of an accident at age 15, Kahlo turned her…

Essex, Robert Devereux, 3d earl of

(Encyclopedia) Essex, Robert Devereux, 3d earl of, 1591–1646, English parliamentary general; son of Robert Devereux, 2d earl of Essex. James I restored him (1604) to the estates of his father and…

Ford, Richard

(Encyclopedia) Ford, Richard, 1944–, American novelist, b. Jackson, Miss.; grad. Michigan State Univ. (B.A., 1966), Univ. of California, Irvine (M.F.A., 1970). Ford's concerns are those of a moralist…

Zagajewski, Adam

(Encyclopedia) Zagajewski, Adam, 1945–2021, Polish poet, b. Lviv, Jagiellonian Univ. (B.A., 1968; M.A., 1970). He and his…