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Leo, in astronomy

(Encyclopedia)Leo [Lat.,=the lion], northern constellation lying S of Ursa Major and on the ecliptic (apparent path of the sun through the heavens) between Cancer and Virgo; it is one of the constellations of the z...

Thutmose IV

(Encyclopedia)Thutmose IV thŏthˈmēz, tōtˈmĕs [key], reigned c.1406–1398 b.c., king of ancient Egypt, of the XVIII dynasty, son and successor of Amenhotep II. He invaded Asia and Nubia, and formed alliances ...

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...

Celestine I, Saint

(Encyclopedia)Celestine I, Saint sĕlˈəstĭn [key], d. 432, pope (422–32), an Italian; successor of St. Boniface I. The opposition of St. Cyril of Alexandria to Nestorianism inspired both sides to appeal to the...

Amenhotep IV

(Encyclopedia)Amenhotep IV or Amenophis IV: see Ikhnaton. ...

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,...

Muhammad IV, Ottoman sultan

(Encyclopedia)Muhammad IV or Mehmet IV, 1641–92, Ottoman sultan (1648–87). He was proclaimed sultan of the Ottoman Empire (Turkey) by the corps of Janissaries after the deposition and murder of his father, Sult...

Patrick, Saint

(Encyclopedia)Patrick, Saint, c.385–461, Christian missionary, the Apostle of Ireland, b. Bannavem Taberniae (an unknown place in Britain, possibly near the Severn or in Pembroke). He was one of the most successf...

Cajetan, Saint

(Encyclopedia)Cajetan, Saint kăjˈətăn, käˌyātänˈ [key], 1480–1547, Italian churchman and reformer. Son of the count of Thiene, he studied civil and canon law, but abandoned work as a jurist at the papal ...