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phenylketonuria

(Encyclopedia) phenylketonuriaphenylketonuriafĕnˌəlkētˌən&oobreve;rˈēə [key] (PKU), inherited metabolic disorder caused by a deficiency in a specific enzyme (phenylalanine hydroxylase). The…

Plunket, Saint Oliver

(Encyclopedia) Plunket orPlunkett, Saint Oliver, 1629–81, Irish Roman Catholic churchman and martyr, b. Co. Meath. He was educated at Rome and named Roman Catholic archbishop of Armagh and primate of…

graphene

(Encyclopedia) graphene, virtually transparent, highly conductive carbon material in which the atoms are organized into a honeycomblike arrangement and form a thin sheet that is one atom thick. Andre…

age grade and age set

(Encyclopedia) age grade and age set, differentiation of social role based on age, commonly found in small-scale societies of North America and East Africa. Age sets are a type of sodality (…

Tantalus

(Encyclopedia) TantalusTantalustănˈtələs [key], in Greek mythology, king of Sipylos, son of Zeus and father of Pelops and Niobe. He was admitted to the society of the gods, but his abominable…

Steptoe, Patrick Christopher

(Encyclopedia) Steptoe, Patrick Christopher, 1913–88, British surgeon, M.D. St. George Hospital Medical School, Univ. of London, 1939. Steptoe worked at Oldham General Hospital from 1951 to 1980,…

Menno Simons

(Encyclopedia) Menno SimonsMenno Simonsmĕnˈō sēˈmōns [key], 1496?–1561, Dutch religious reformer. The name of the Mennonites was derived from his name, although he was not the actual founder of the…

injection

(Encyclopedia) injection, introduction of a fluid into the body, usually by means of a needle and syringe. The material injected may be a test substance (as in determining allergic sensitivity or…

Roswell

(Encyclopedia) RoswellRoswellrŏzˈwĕl [key], city (1990 pop. 44,654), seat of Chaves co., SE N.Mex., near the Pecos River; settled 1869 as a trading post, inc. 1903. It is the trade, marketing, and…

Thorndike, Edward Lee

(Encyclopedia) Thorndike, Edward LeeThorndike, Edward Leethôrnˈdīk [key], 1874–1949, American educator and psychologist, b. Williamsburg, Mass., grad. Wesleyan Univ., 1895, and Harvard, 1896, Ph.D.…