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Ravel, Maurice

(Encyclopedia)Ravel, Maurice mōrēsˈ rävĕlˈ [key], 1875–1937, French composer, b. in the Pyrenees. He entered the Paris Conservatory in 1889, where he was later a student of Fauré. Ravel became a leading ex...

geomorphology

(Encyclopedia)geomorphology, study of the origin and evolution of the earth's landforms, both on the continents and within the ocean basins. It is concerned with the internal geologic processes of the earth's crust...

Ghirlandaio, Domenico

(Encyclopedia)Ghirlandaio or Ghirlandajo, Domenico both: dōmĕˈnēkō gērländäˈyō [key], 1449–94, Florentine painter, whose family name was Bigordi. He may have studied painting and mosaics under Alesso Ba...

endometriosis

(Encyclopedia)endometriosis ĕnˌdəmēˌtrē-ōˈsĭs [key], a condition in which small pieces of the endometrium (the lining of the uterus) migrate to other places in the pelvic area. The endometrial fragments ma...

drought

(Encyclopedia)drought, abnormally long period of insufficient rainfall. Drought cannot be defined in terms of inches of rainfall or number of days without rain, since it is determined by such variable factors as th...

Adams, Charles Francis, 1835–1915, American economist and historian

(Encyclopedia)Adams, Charles Francis, 1835–1915, American economist and historian, b. Boston; son of Charles Francis Adams (1807–86). In the Civil War he fought at Antietam and Gettysburg and was brevetted brig...

blister beetle

(Encyclopedia)blister beetle, common name for certain soft-bodied, usually black or brown, mostly elongate and cylindrical beetles belonging to the family Meloidae. Blister beetles are common insects found feeding ...

boiler

(Encyclopedia)boiler, device for generating steam. It consists of two principal parts: the furnace, which provides heat, usually by burning a fuel, and the boiler proper, a device in which the heat changes water in...

Lorenzetti

(Encyclopedia)Lorenzetti lōrān-tsĕtˈtē [key], two brothers who were major Sienese painters. Pietro Lorenzetti, c.1280–c.1348, was first influenced by Duccio di Buoninsegna and Giovanni Pisano. His earliest k...

motorcycle

(Encyclopedia)motorcycle, motor vehicle whose design is based on the bicycle. The German inventor Gottlieb Daimler is generally credited with building the first practical motorcycle in 1885. The motorcycle did not ...