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Lancaster, cities, United States

(Encyclopedia)Lancaster. 1 Uninc. city (1990 pop. 97,291), Los Angeles co., S Calif., in Antelope Valley and in the Mojave Desert; laid out 1894. It developed as a trade center for an irrigated farming area and has...

Edward IV

(Encyclopedia)Edward IV, 1442–83, king of England (1461–70, 1471–83), son of Richard, duke of York. He succeeded to the leadership of the Yorkist party (see Roses, Wars of the) after the death of his father i...

projective geometry

(Encyclopedia)projective geometry, branch of geometry concerned with those properties of geometric figures that remain invariant under projection. The basic elements are points, lines, and planes, and the following...

Ngugi wa Thiong'o

(Encyclopedia)Ngugi wa Thiong'o ĕngo͞oˈgē wä tē-ŏngˈgō [key] or James Ngugi, 1938–, Kenyan writer, acclaimed as East Africa's foremost novelist. He studied at universities in Uganda and England. His firs...

air conditioning

(Encyclopedia)CE5 Cross section of air conditioning unit. air conditioning, mechanical process for controlling the humidity, temperature, cleanliness, and circulation of air in buildings and rooms. Indoor air i...

Veracruz, state, Mexico

(Encyclopedia)Veracruz yäˈbā [key], state (1990 pop. 6,228,239), 27,759 sq mi (71,896 sq km), E central Mexico. The capital is Xalapa. Stretching c.430 mi (690 km) along the Gulf of Mexico and reaching from 30 t...

blood groups

(Encyclopedia)blood groups, differentiation of blood by type, classified according to immunological (antigenic) properties, which are determined by specific substances on the surface of red blood cells. Blood group...

Friends, Religious Society of

(Encyclopedia)Friends, Religious Society of, religious body originating in England in the middle of the 17th cent. under George Fox. The members are commonly called Quakers, originally a term of derision. The org...

aster

(Encyclopedia)CE5 Cross section of a sunflower, a member of the aster family aster [Gr.,=star], common name for the Asteraceae (Compositae), the aster family, in North America, name for plants of the genus Aste...

home schooling

(Encyclopedia)home schooling, the practice of teaching children in the home as an alternative to attending public or private elementary or high school. In most cases, one or both of the children's parents serve as ...