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area

(Encyclopedia)CE5 area, measure of the size of a surface region, usually expressed in units that are the square of linear units, e.g., square feet or square meters. In elementary geometry, formulas for the areas...

Bath, city, England

(Encyclopedia)Bath, city (2021 pop. 88,859), Bath and North East Somerset, SW England, in the Avon River valley. Britain's leading winter resort, Bath has the only na...

acre, measure of land area

(Encyclopedia)acre, measure of land area used in the English units of measurement. The acre was originally the area a yoke of oxen could plow in a day and therefore differed in size from one locality to another. It...

Giralda

(Encyclopedia)Giralda hērälˈdä [key], the famous tower adjoining the Cathedral of Seville, Spain. It was built (1163–84) to serve as minaret to the main mosque of Seville, on the site of which the cathedral n...

abacus, in architecture

(Encyclopedia)abacus ăbˈəkəs [key], in architecture, flat slab forming the top member of a capital. In classical orders it varies from a square form having unmolded sides in the Greek Doric, to thinner proporti...

Concorde, Place de la

(Encyclopedia)Concorde, Place de la pläs də lä kôNkôrdˈ [key], large square, Paris, France. It is bounded by the Tuileries gardens; the Champs Élysées; the Seine River; and a facade of buildings divided by ...

matrix

(Encyclopedia)matrix, in mathematics, a rectangular array of elements (e.g., numbers) considered as a single entity. A matrix is distinguished by the number of rows and columns it contains. The matrix CE5 is a 2...

Karman, Tawakul

(Encyclopedia)Karman, Tawakul täwäko͞olˈ kärmänˈ [key], 1979–, Yemeni journalist and human-rights activist. An outspoken journalist, she encountered repeated government opposition and was a cofounder (2005...

radical, in mathematics

(Encyclopedia)radical, in mathematics, symbol () placed over a number or expression, called the radicand, to indicate a root of the radicand. When used without a sign or index number, as in 4, it designates the pos...

stencil

(Encyclopedia)stencil, cutout device of oiled or shellacked tough and resistant paper, thin metal, or other material used in applying paint, dye, or ink to reproduce its design or lettering upon a surface. Designin...