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meson

(Encyclopedia)meson mēˈzŏn [key] [Gr.,=middle (i.e., middleweight)], class of elementary particles whose masses are generally between those of the lepton class of lighter particles and those of the baryon class ...

cult

(Encyclopedia)cult, ritual observances involved in worship of, or communication with, the supernatural or its symbolic representations. A cult includes the totality of ideas, activities, and practices associated wi...

brown dwarf

(Encyclopedia)brown dwarf, in astronomy, celestial body that is larger than a planet but does not have sufficient mass to convert hydrogen into helium via nuclear fusion as stars do. Also called “failed stars,”...

North Las Vegas

(Encyclopedia)North Las Vegas, city (1990 pop. 47,707), Clark co., SE Nev., a residential suburb of Las Vegas; inc. 1946. Tourism is the economic mainstay of this growing suburb. The city's population more than tri...

Midwest City

(Encyclopedia)Midwest City, city (1990 pop. 52,267), Oklahoma co., central Okla., a residential suburb of Oklahoma City; founded 1942 with the activation of adjoining Tinker Air Force Base, a logistics center. The ...

Rio Branco

(Encyclopedia)Rio Branco, city (1996 pop. 228,907), capital of Acre state, NW Brazil, on the Acre River. Rubber and Brazil nuts are its chief products; there is also some farming. Rio Branco has air connections wit...

cooling system

(Encyclopedia)cooling system: see air conditioning; internal-combustion engine; refrigeration. ...

O'Toole, Erin Michael

(Encyclopedia)O'Toole, Erin Michael, 1973–, Canadian politician. He served in the Royal Canadian Air Force (1991–2000), then earned a law degree and practised corporate law. A member of the Conservative party, ...

Horta

(Encyclopedia)Horta hôrˈtə, Port. ôrˈtə [key], town, capital of Horta dist., in the Azores, Portugal, on Faial island. It has...

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