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Devils Lake

(Encyclopedia)Devils Lake. 1 200 sq mi (520 sq km), NE central N.Dak., the largest natural body of water in the state. In an area of typically inland drainage, Devils Lake can range from a dry lakebed to more than ...

fatty acid

(Encyclopedia)fatty acid, any of the organic carboxylic acids present in fats and oils as esters of glycerol. Molecular weights of fatty acids vary over a wide range. The carbon skeleton of any fatty acid is unbran...

Fischer-Dieskau, Dietrich

(Encyclopedia)Fischer-Dieskau, Dietrich dēˈtrĭkh fĭshˈər-dēsˈkou [key], 1925–2012, German baritone. Possessed of a sensitive voice capable of a wide variety of range and expression, Fischer-Dieskau was th...

Behbahani, Simin

(Encyclopedia)Behbahani, Simin, 1927–2014, Iranian poet and political activist, b. Tehran as Siminbar Khalili. The daughter of intellectuals, she studied law at the Univ. of Tehran, then worked as a teacher of sc...

Poincaré, Jules Henri

(Encyclopedia)Poincaré, Jules Henri zhül äNrēˈ pwăNkärāˈ [key], 1854–1912, French mathematician, physicist, and author. He was from 1881 connected with the faculty of sciences at the Univ. of Paris. One ...

Flexner, Abraham

(Encyclopedia)Flexner, Abraham, 1866–1959, American educator, b. Louisville, Ky., grad. Johns Hopkins, 1886. After 19 years as a secondary school teacher and principal, he took graduate work at Harvard and at the...

Huntington's disease

(Encyclopedia)Huntington's disease, hereditary, acute disturbance of the central nervous system usually beginning in middle age and characterized by involuntary muscular movements and progressive intellectual deter...

Aniakchak National Monument and Preserve

(Encyclopedia)Aniakchak National Monument and Preserve ănēăkˈchăk [key], on the Alaska Peninsula, SW Alaska. Located in the Aleutian Range, the monument (137,176 acres/55,556 hectares) and surrounding preserve...

kettledrum

(Encyclopedia)kettledrum, in music, percussion instrument consisting of a hemispherical metal vessel over which a membrane is stretched, played with soft-headed wooden drumsticks. Of ancient origin, it appeared ear...

staff

(Encyclopedia)staff, in musical notation, a set of horizontal lines upon and between which notes are written so as to determine their relative pitch, and in connection with a clef, their absolute pitch. Staffs with...