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conjoined twins
(Encyclopedia)conjoined twins, congenitally united organisms that are complete or nearly complete individuals, historically known as Siamese twins. They develop from a single fertilized ovum that has divided imperf...thalidomide
(Encyclopedia)thalidomide thəlĭdˈəmĭdˌ [key], sleep-inducing drug found to produce skeletal defects in developing fetuses. The drug was marketed in Europe, especially in West Germany and Britain, from 1957 to...pregnancy
(Encyclopedia)pregnancy, period of time between fertilization of the ovum (conception) and birth, during which mammals carry their developing young in the uterus (see embryo). The average duration of pregnancy in h...paralysis
(Encyclopedia)paralysis or palsy pôlˈzē [key], complete loss or impairment of the ability to use voluntary muscles, usually as the result of a disorder of the nervous system. The nervous tissue that is injured m...stuttering
(Encyclopedia)stuttering or stammering, speech disorder marked by hesitation and inability to enunciate consonants without spasmodic repetition. Known technically as dysphemia, it has sometimes been attributed to a...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 ...dissociative identity disorder
(Encyclopedia)dissociative identity disorder: see multiple personality. ...grid computing
(Encyclopedia)grid computing, the concurrent application of the processing and data storage resources of many computers in a network to a single problem. It also can be used for load balancing as well as high avail...Sanger, Margaret Higgins
(Encyclopedia)Sanger, Margaret Higgins, 1879–1966, American leader in the birth control movement, b. Corning, N.Y. Personal experience and work as a public-health nurse, much of it on New York City's Lower East S...labor, in physiology
(Encyclopedia)labor: see birth.Browse by Subject
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