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chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

Abravanel, Judah

(Encyclopedia)Abravanel or Abarbanel, Judah, c.1460–c.1523, Jewish philosopher, physician, and poet, son of Isaac Abravanel, b. Lisbon; he is also known as Leone Ebreo. He fled (1483) from Portugal to Spain with ...

Parmigianino

(Encyclopedia)Parmigianino –jäˈnō [key], 1503–40, Italian painter and etcher, one of the most sensitive mannerist artists (see mannerism) and one of the period's finest draftsmen. His real name was Girolamo ...

Paoli, Pasquale

(Encyclopedia)Paoli, Pasquale päskwäˈlā päˈōlē [key], 1725–1807, Corsican patriot. He shared the exile (1739–55) of his father, Giacinto Paoli, who had fought against the Genoese rulers of the island. I...

Ophüls, Max

(Encyclopedia)Ophüls, Max ôˈfüls [key], 1902–57, German-born French film director, b. Saarbrücken as Maximilian Oppenheimer. He started his career in the 1920s as an stage actor and director and began direct...

Berio, Luciano

(Encyclopedia)Berio, Luciano lo͞ochäˈnō bĕrˈyō [key], 1925–2003, Italian composer, b. Oneglia. After studying at the Milan Conservatory and working as a coach and conductor in Italian opera houses, Berio w...

Giotto

(Encyclopedia)Giotto (Giotto di Bondone) jôtˈtō dē bōndôˈnā [key], c.1266–c.1337, Florentine painter and architect. He is noted not only for his own work, but for the lasting impact he had on the course o...

Weegee

(Encyclopedia)Weegee, pseud. of Arthur Fellig, 1899–1968, American photojournalist, b. Zolochiv, Ukraine (then in Austria-Hungary) as Usher Fellig. His family immigrated (1910) to New York City, where he soon qui...

Francis, Saint

(Encyclopedia)Francis, Saint, or Saint Francis of Assisi əsēˈzē [key], 1182?–1226, founder of the Franciscans, one of the greatest Christian saints, b. Assisi, Umbria, Italy. Two years before his death (122...

silicate

(Encyclopedia)silicate, chemical compound containing silicon, oxygen, and one or more metals, e.g., aluminum, barium, beryllium, calcium, iron, magnesium, manganese, potassium, sodium, or zirconium. Silicates may b...