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Aldrovandi, Ulisse

(Encyclopedia)Aldrovandi, Ulisse o͞olēsˈsā äldrōvänˈdē [key], 1522–1605, Italian naturalist, professor at the Univ. of Bologna. He instigated the establishment (1567) of the Bologna Botanical Garden and ...

Snowdon

(Encyclopedia)Snowdon, Welsh Yr Wyddfa, highest mountain of Wales, 3,560 ft (1,085 m) high, Gwynedd, NW Wales. Its five peaks are separated by passes. There is a rack and pinion railway (opened 1896) from Llanberis...

sans-culottides

(Encyclopedia)sans-culottides säN-külôtēdˈ [key], the last five days of the year in the French Revolutionary calendar, thus named in honor of the sans-culottes. ...

San Cristóbal

(Encyclopedia)San Cristóbal sän krēstōˈbäl [key], active volcano, c.5,725 ft (1,745 m) high, Chinandega dept., NW Nicaragua. Part of a complex of five volcanic mountains, it is the country's highest volcano a...

rebec

(Encyclopedia)rebec rēˈbĕk [key], one of the earliest forms of the violin. It was pear-shaped, had from three to five strings, and possessed a strident tone. Its use, which began in the 13th cent., was to play m...

Ricardo, Jorge Antonio

(Encyclopedia)Ricardo, Jorge Antonio, 1961–, Brazilian jockey, b. Rio de Janeiro. Riding in Brazil and Argentina, he has won the prestigious Gran Premio Latinoamericano five times. In 1993 he set a Brazilian reco...

Oberlin, Jean Frédéric

(Encyclopedia)Oberlin, Jean Frédéric zhäN frādārēkˈ ôbĕrlăNˈ [key], 1740–1826, Alsatian Lutheran clergyman. He was appointed in 1767 to a pastorate in Ban-de-la-Roche, Bas-Rhin dept., France. Oberlin i...

Berry, Martha McChesney

(Encyclopedia)Berry, Martha McChesney, 1866–1942, American educator and philanthropist, b. near Rome, Ga., Ph.D. Univ. of Georgia, 1920. Determined to provide educational opportunities for underprivileged mountai...

dimension, in mathematics

(Encyclopedia)dimension, in mathematics, number of parameters or coordinates required locally to describe points in a mathematical object (usually geometric in character). For example, the space we inhabit is three...

polyhedron

(Encyclopedia)CE5 Polyhedrons polyhedron pŏlˌēhēˈdrən [key], closed solid bounded by plane faces; each face of a polyhedron is a polygon. A cube is a polyhedron bounded by six polygons (in this case squar...