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Leo XIII, pope

(Encyclopedia)Leo XIII, 1810–1903, pope (1878–1903), an Italian (b. Carpineto, E of Rome) named Gioacchino Pecci; successor of Pius IX. Ordained in 1837, he earned an excellent reputation as archbishop of Perug...

Tindemans, Leo

(Encyclopedia)Tindemans, Leo (Leonard Clemence Tindemans), 1922–2014, Belgian stateman. He studied economics at the universities of Antwerp and Ghent, and in 1958 became head of the Flemish Christian Democrats. F...

Esaki, Leo

(Encyclopedia)Esaki, Leo, 1925–, Japanese physicist, Ph.D. Univ. of Tokyo, 1959. Esaki was a researcher with IBM from 1960 until his retirement in 1992. He then served (1992–98) as president of the Univ. of Tsu...

Leo III, Saint, pope

(Encyclopedia)Leo III, Saint, pope (795–816), a Roman; successor of Adrian I. He was attacked about the face and eyes by members of Adrian's family, who hoped to render him unfit for the papacy. Leo recovered and...

Baekeland, Leo Hendrik

(Encyclopedia)Baekeland, Leo Hendrik bākˈlănd [key], 1863–1944, American chemist, b. Belgium, grad. Univ. of Ghent, 1882. In 1889 he emigrated to the United States. He founded (1893) and conducted, until 1899,...

Leo IV, Byzantine emperor

(Encyclopedia)Leo IV (Leo the Khazar), d. 780, Byzantine emperor (775–80), son and successor of Constantine V. He owed his nickname to his mother, a Khazar princess. Leo tempered the iconoclastic excesses of his ...

Leo I, Byzantine emperor

(Encyclopedia)Leo I, d. 474, Byzantine or East Roman emperor (457–74). Chosen by the senate to succeed Marcian, he sought to counteract the preponderance of Germans in the Roman army by enlisting Isaurians. A nav...

Leo III, Byzantine emperor

(Encyclopedia)Leo III (Leo the Isaurian or Leo the Syrian), c.680–741, Byzantine emperor (717–41). He was probably born in N Syria (rather than in Isauria, as once thought). He held diplomatic and military post...

Károlyi, Count Julius

(Encyclopedia)Károlyi, Count Julius käˈrôlyĭ [key], 1871–1946?, Hungarian politician; cousin of Michael Károlyi. He became premier and finance minister in 1931. He resigned in 1932 after failing to satisfy ...

Leo V, Byzantine emperor

(Encyclopedia)Leo V (Leo the Armenian), d. 820, Byzantine emperor (813–20), successor of Michael I. A former general, Leo successfully defended (813) Constantinople against the Bulgars and concluded a 30-year tru...