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Barton, Derek H. R.

(Encyclopedia)Barton, Derek H. R., 1918–98, British chemist, b. Gravesend, England, grad. Imperial College of Science and Technology (B.S. 1940, Ph.D. 1942, D.Sc. 1949). He was on the faculty of Imperial College ...

meristem

(Encyclopedia)meristem mĕrˈistĕmˌ [key], a specialized section of plant tissue characterized by cell division and growth. Much of the mature plant's growth is provided by meristems. Apical meristems found at th...

infertility

(Encyclopedia)infertility, inability to conceive or carry a child to delivery. The term is usually limited to situations where the couple has had intercourse regularly for one year without using birth control. The ...

infancy

(Encyclopedia)infancy, stage of human development lasting from birth to approximately two years of age. The hallmarks of infancy are physical growth, motor development, vocal development, and cognitive and social d...

hypertrophy

(Encyclopedia)hypertrophy hīpûrˈtrəfē [key], enlargement of a tissue or organ of the body resulting from an increase in the size of its cells. Such growth accompanies an increase in the functioning of the tiss...

Brooklyn Center

(Encyclopedia)Brooklyn Center, city (2020 pop. 33,782), Hennepin co., SE Minn., a residential suburb of Minneapolis; inc. 1911. It has light industry and has been mar...

nutrition

(Encyclopedia)nutrition, study of the materials that nourish an organism and of the manner in which the separate components are used for maintenance, repair, growth, and reproduction. Nutrition is achieved in vario...

Colton

(Encyclopedia)Colton, city (2020 pop. 53,909), San Bernardino co., S Calif., a suburb of San Bernardino, inc. 1887. Originally a rich citrus and farm area, Colton exp...

Spence, Michael

(Encyclopedia)Spence, Michael (Andrew Michael Spence), 1943–, American economist and educator, b. Montclair, N.J., Ph.D. Harvard, 1972. He has taught at Stanford (1973–75, 1990–99), Harvard (1975–90), and N...

Shenzhen

(Encyclopedia)Shenzhen shĕnˈjŭnˈ [key], city (1994 est. pop. 695,600) and port, S Guangdong prov., China, on the South China Sea, N of Hong Kong. Designated a special economic zone in 1979 when it was undevelop...