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endocarditis

(Encyclopedia)endocarditis ĕnˌdōkärdīˈtĭs [key], bacterial or fungal infection of the endocardium (inner lining of the heart) that can be either acute or subacute. In the acute form the symptoms (fever, mala...

fatigue, in physiology

(Encyclopedia)fatigue, in physiology, inability to perform reasonable and necessary physical or mental activity. Muscle fatigue, for example, results when the contractile properties of muscle are reduced, and conti...

franchise

(Encyclopedia)franchise, in government, a right specifically conferred on a group or individual by a government, especially the privilege conferred by a municipality on a corporation of operating public utilities, ...

ivory-billed woodpecker

(Encyclopedia)ivory-billed woodpecker, common name for the largest of the North American woodpeckers, Campephilus principalis. Once plentiful in Southern hardwood forests, it was believed to be extinct or nearing e...

incest

(Encyclopedia)incest, sexual relations between persons to whom marriage is prohibited by custom or law because of their close kinship. Ideas of kinship, however, vary widely from group to group, hence the definitio...

Johnson, Boris

(Encyclopedia)Johnson, Boris (Alexander Boris de Pfeffel Johnson), 1964–, British political leader, b. New York City, grad. Oxford (1986). While at Oxford Johnson was president of the prestigious Oxford Union deb...

medal

(Encyclopedia)medal, a piece of metal, cast or struck, often coin-shaped. The obverse and reverse bear bas-relief and inscription. Commemorative medals are issued in memory of a notable person or event. Civil and m...

mixture

(Encyclopedia)mixture, in chemistry, a physical combination of two or more pure substances (i.e., elements or compounds). A mixture is distinguished from a compound, which is formed by the chemical combination of t...

pardon

(Encyclopedia)pardon, in law, exemption from punishment for a criminal conviction granted by the grace of the executive of a government. A general pardon to a class of persons guilty of the same offense (e.g., insu...

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 ...