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Nicaea, Second Council of

(Encyclopedia)Nicaea, Second Council of, 787, 7th ecumenical council, convened by Byzantine Empress Irene. Called to refute iconoclasm, the council declared that images ought to be venerated (but not worshiped) and...

Nicaea, First Council of

(Encyclopedia)Nicaea, First Council of, 325, 1st ecumenical council, convened by Roman Emperor Constantine the Great to solve the problems raised by Arianism. It has been said that 318 persons attended, but a more ...

Lyons, Second Council of

(Encyclopedia)Lyons, Second Council of, 1274, 14th ecumenical council of the Roman Catholic Church. It was summoned by Pope Gregory X to discuss problems in the Holy Land, to remove the schism of East and West, and...

Constantinople, Second Council of

(Encyclopedia)Constantinople, Second Council of, 553, regarded generally as the fifth ecumenical council. It was convened by Byzantine Emperor Justinian I to settle the dispute known as the Three Chapters. In an at...

Lateran Council, Second

(Encyclopedia)Lateran Council, Second, 1139, 10th ecumenical council of the Roman Catholic Church, convened at the Lateran Palace, Rome, by Pope Innocent II. The council attempted to heal the wounds left by the sch...

Vatican Council, Second

(Encyclopedia)Vatican Council, Second, popularly called Vatican II, 1962–65, the 21st ecumenical council (see council, ecumenical) of the Roman Catholic Church, convened by Pope John XXIII and continued under Pau...

Nicaea

(Encyclopedia)Nicaea nīsēˈə [key], city of Bithnyia, N Asia Minor, built in the 4th cent. b.c. by Antigonus I as Antigonia and renamed Nicaea by Lysimachus for his wife. It flourished under the Romans. It was t...

second

(Encyclopedia)second, abbr. sec or s, fundamental unit of time in all systems of measurement. In practical terms, the second is 1/60 of a minute, 1/3,600 of an hour, or 1/86,400 of a day. Since the length of the da...

Nicaea, empire of

(Encyclopedia)Nicaea, empire of, 1204–61. In 1204 the armies of the Fourth Crusade set up the Latin Empire of Constantinople, but the Crusaders' influence did not extend over the entire Byzantine Empire. Several ...