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Gaitonde, V. S.

(Encyclopedia) Gaitonde, V. S. (Vasudeo Santu Gaitonde), 1924–2001, Indian painter, grad. Sir Jamsetjee Jeejeebhoy School of Art, Bombay (now Mumbai), 1948. He became part of the Progressive Artists…

ultrasound

(Encyclopedia) ultrasound or sonography, in medicine, technique that uses sound waves to study and treat hard-to-reach body areas. In scanning with ultrasound, high-frequency sound waves are…

Cameron, James

(Encyclopedia) Cameron, James, 1954–, Canadian motion-picture director and screenwriter, b. Kapuskasing, Ont. Beginning as a screenwriter and then art director, he first directed in 1981. His science…

toxin

(Encyclopedia) toxin, poison produced by living organisms. Toxins are classified as either exotoxins or endotoxins. Exotoxins are a diverse group of soluble proteins released into the surrounding…

masque

(Encyclopedia) masque, courtly form of dramatic spectacle, popular in England in the first half of the 17th cent. The masque developed from the early 16th-century disguising, or mummery, in which…

Deak, Francis

(Encyclopedia) Deak, Francis, Hung. Deák FerencDeak, Francis,dĕˈäk fĕˈrĕnts [key], 1803–76, Hungarian politician. A landed proprietor and lawyer, he entered the Hungarian diet in 1833 and became…

Ramus, Petrus

(Encyclopedia) Ramus, PetrusRamus, Petruspēˈtrəs rāˈməs [key], or Pierre de La RaméeRamus, Petruspyĕr də lä rämāˈ [key], 1515–72, French humanist and philosopher. Attempting to break through…

permafrost

(Encyclopedia) permafrost, permanently frozen soil, subsoil, or other deposit, characteristic of arctic and some subarctic regions; similar conditions are also found at very high altitudes in…

tumbleweed

(Encyclopedia) tumbleweed, any of several plants, particularly abundant in prairie and steppe regions, that commonly break from their roots at maturity and, drying into a rounded tangle of light,…

fracture

(Encyclopedia) fracture, breaking of a bone. A simple fracture is one in which there is no contact of the broken bone with the outer air, i.e., the overlying tissues are intact. In a comminuted…