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population I and II

(Encyclopedia)population I and II, in astronomy: see stellar populations. ...

oxidation and reduction

(Encyclopedia)oxidation and reduction, complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation was used to re...

acids and bases

(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...

permutations and combinations

(Encyclopedia)permutations and combinations: see probability. ...

orchestra and orchestration

(Encyclopedia)CE5 Typical seating plan of a symphony orchestra orchestra and orchestration, an orchestra is a musical ensemble of mixed instruments based on strings and winds, under the direction of a conductor...

visit and search

(Encyclopedia)visit and search: see search, right of. ...

Fanfani, Amintore

(Encyclopedia)Fanfani, Amintore ämēntôˈrā fänfänˈē [key], 1908–99, Italian political leader, a Christian Democrat. A noted scholar, he held several cabinet posts after World War II and was secretary of t...

Muhammad VI, king of Morocco

(Encyclopedia)Muhammad VI, 1963–, king of Morocco (1999–), formerly Muhammad ben Al-Hassan, crown prince Sidi Muhammad. He studied at Muhammad V Univ., Rabat, where he received bachelor's (1985) and master's (1...

Zelenskiy, Volodymyr Oleksandrovych

(Encyclopedia)Zelenskiy, Volodymyr Oleksandrovych, 1978–, Ukrainian political leader and entertainer, president of Ukraine (2019–). He ear...

Pan-American Union

(Encyclopedia)Pan-American Union, former name for the General Secretariat of the Organization of American States (OAS). It was founded (1889–90) at the first of the modern Inter-American Conferences (see Pan-Amer...