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Regulus, in astronomy

(Encyclopedia)Regulus rĕgˈyələs [key], brightest star in the constellation Leo; Bayer designation Alpha Leonis; 1992 position R.A. 10h08m, Dec. +12°00′. A bluish-white main-sequence star of spectral class B7...

Vida, Marco Girolamo

(Encyclopedia)Vida, Marco Girolamo märˈkō jērôˈlämō vēˈdä [key], c.1490–1566, Italian poet, b. Cremona. After joining the humanist court of Pope Leo X, he was given a priory at Frascati and was commiss...

Constantine VII, Byzantine emperor

(Encyclopedia)Constantine VII (Constantine Porphyrogenitus), 905–59, Byzantine emperor (913–59). He acceded after the brief reign of his uncle Alexander, who succeeded Constantine's father, Leo VI. A regency (9...

Bakelite

(Encyclopedia)Bakelite bāˈkəlīt [key] [for its inventor, L. H. Baekeland], synthetic thermosetting resin. It has been widely used both alone, to form whole objects, and in combination with other materials, as a...

Medici, Giovanni de', 1498–1526, Italian condottiere

(Encyclopedia)Medici, Giovanni de', or Giovanni delle Bande Nere jōvänˈnē dĕlˈlā bänˈdā nāˈrā [key] [Ital.,=of the black bands], 1498–1526, Italian condottiere; great-grandson of Lorenzo de' Medici (...

Nicephorus, Saint

(Encyclopedia)Nicephorus, Saint nīsĕfˈərəs [key], 758?–829?, patriarch of Constantinople (806–15), Byzantine historian and theologian. St. Nicephorus attended the Second Council of Nicaea as lay representa...

Medici, Lorenzo de', 1492–1519, duke of Urbino

(Encyclopedia)Medici, Lorenzo de', 1492–1519, duke of Urbino (1516–19); son of Piero de' Medici. His uncle, Pope Leo X, made the youthful Lorenzo duke of Urbino. After his early death, however, Urbino reverted ...

Schism of East and West

(Encyclopedia)Schism of East and West, division between the Orthodox Eastern Church and the Roman Catholic Church. See Christianity; Ferrara-Florence, Council of; Leo IX, Saint; Lyons, Second Council of; papacy; Ph...

Familists

(Encyclopedia)Familists fămˈĭlĭsts [key], religious community founded in Friesland in the 16th cent. by Hendrik Niclaes. Niclaes, a merchant of Münster and originally a Roman Catholic, claimed to have been cho...

Lateran Council, Fifth

(Encyclopedia)Lateran Council, Fifth, 1512–17, 18th ecumenical council of the Roman Catholic Church, convened by Pope Julius II and continued by his successor Leo X. Julius called the council to counter an attemp...