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Old Vic

(Encyclopedia)Old Vic, London repertory company and theater. The Old Vic theater opened in 1818 as the Coburg, and was renamed the Royal Victoria in 1833, soon familiarized to the Old Vic. In 1914 it became a Shake...

feedback

(Encyclopedia)CE5 Basic feedback control system feedback, arrangement for the automatic self-regulation of an electrical, mechanical, or biological system by returning part of its output as input. A simple exam...

Parkinson's disease

(Encyclopedia)Parkinson's disease or Parkinsonism, degenerative brain disorder first described by the English surgeon James Parkinson in 1817. When there is no known cause, the disease usually appears after age 40 ...

toxoplasmosis

(Encyclopedia)toxoplasmosis, infection caused by Toxoplasma gondii, a single-celled parasitic microorganism that can infect most warm-blooded animals but reproduces only in animals of the cat family, who shed the p...

stuttering

(Encyclopedia)stuttering or stammering, speech disorder marked by hesitation and inability to enunciate consonants without spasmodic repetition. Known technically as dysphemia, it has sometimes been attributed to a...

obesity

(Encyclopedia)obesity, condition resulting from excessive storage of fat in the body. Obesity is now usually defined using a formula known as the body mass index (BMI), in which weight (in kilograms) is divided by ...

infarction

(Encyclopedia)infarction, blockage of blood circulation to a localized area or organ of the body resulting in tissue death. Infarctions commonly occur in the spleen, kidney, lungs, brain, and heart. The acute emerg...

Knox, Philander Chase

(Encyclopedia)Knox, Philander Chase fəlănˈdər [key], 1853–1921, U.S. cabinet member, b. Brownsville, Pa. He built up a fortune as a corporation lawyer in Pittsburgh. He was Attorney General (1901–4) in the ...

Getty Center

(Encyclopedia)Getty Center, art museum complex in Brentwood, Calif., operated by the J. Paul Getty Trust. It consists of six buildings on 124 acres (50 hectares) located on a spectacular promontory overlooking Los ...

collateral

(Encyclopedia)collateral kəlătˈərəl [key], something of value given or pledged as security for payment of a loan. Collateral consists usually of financial instruments, such as stocks, bonds, and negotiable pap...