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Kamakura

(Encyclopedia)Kamakura kämäˈko͞orä [key], city (1990 pop. 174,307), Kanagawa prefecture, central Honshu, Japan, on Sagami Bay and at the base of the Miura Peninsula. It is a resort and residential area but is ...

Vega

(Encyclopedia)Vega vāˈgə [key], brightest star in the constellation Lyra; Bayer designation Alpha Lyrae; 1992 position R.A. 18h36.7m, Dec. +38°47′. A white main-sequence star of spectral class A0 V, its appar...

Capablanca, José Raúl

(Encyclopedia)Capablanca, José Raúl hōsāˈ räo͞olˈ käpäblängˈkä [key], 1888–1942, Cuban chess player, b. Havana. Champion of Cuba at the age of 12, he won the world's championship from Emanuel Lasker ...

eider, in zoology

(Encyclopedia)eider: see duck.

diet, in nutrition

(Encyclopedia)diet, food and drink regularly consumed for nourishment. Nutritionists generally recommend eating a wide variety of foods; however, some groups of people survive on a very limited diet. The traditiona...

dike, in technology

(Encyclopedia)dike, in technology: see levee.

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...

dimension, in physics

(Encyclopedia)dimension, in physics, an expression of the character of a derived quantity in relation to fundamental quantities, without regard for its numerical value. In any system of measurement, such as the met...

Dione, in astronomy

(Encyclopedia)Dione dīōˈnē [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn IV (or S4), Dione is 695 mi (1,120 km) in diameter, orbits Saturn at a mean distanc...

e, in mathematics

(Encyclopedia)e, in mathematics, irrational number occurring widely in mathematics and science, approximately equal to the value 2.71828; it is the base of natural, or Naperian, logarithms. The number e is defined ...