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tetanus

(Encyclopedia)tetanus tĕtˈnəs, –ənəs [key] or lockjaw, acute infectious disease of the central nervous system caused by the toxins of Clostridium tetani. The organism has a widespread distribution and is com...

calcium hydroxide

(Encyclopedia)calcium hydroxide, Ca(OH)2, colorless crystal or white powder. It is prepared by reacting calcium oxide (lime) with water, a process called slaking, and is also known as hydrated lime or slaked lime. ...

safety lamp

(Encyclopedia)safety lamp, oil lamp designed for safe use in mines and other places where flammable gases such as firedamp (see damp) may be present. Its invention (c.1816) is usually attributed to Sir Humphry Davy...

europium

(Encyclopedia)europium yo͝orōˈpēəm [key] [from Europe], metallic chemical element; symbol Eu; at. no. 63; at. wt. 151.964; m.p. about 820℃; b.p. about 1,600℃; sp. gr. 5.25 at 25℃; valence +2 or +3. Europ...

hydrazine

(Encyclopedia)hydrazine hīˈdrəzēnˌ [key], chemical compound, formula NH2NH2, m.p. 1.4℃, b.p. 113.5℃, specific gravity 1.011 at 15℃. It is very soluble in water and soluble in alcohol. At ordinary tempera...

lyric

(Encyclopedia)lyric, in ancient Greece, a poem accompanied by a musical instrument, usually a lyre. Although the word is still often used to refer to the songlike quality in poetry, it is more generally used to ref...

plastic surgery

(Encyclopedia)plastic surgery, surgical repair of congenital or acquired deformities and the restoration of contour to improve the appearance and function of tissue defects. Development of this specialized branch o...

Wallace, George Corley

(Encyclopedia)Wallace, George Corley, 1919–98, governor of Alabama (1963–67, 1971–79, 1983–87), b. Clio, Ala. Admitted to the bar in 1942, he was active in the Alabama Democratic party, serving in the state...

sagebrush

(Encyclopedia)sagebrush, name for several species of Artemisia, deciduous shrubs of the family Asteraceae (aster family), particularly abundant in arid regions of W North America. The common sagebrush (A. tridentat...

Ashbery, John

(Encyclopedia)Ashbery, John, 1927–2017, American poet, b. Rochester, N.Y., grad. Harvard (B.A., 1949), Columbia (M.A., 1951). Among the most acclaimed and influential American poets of his era, he was (1960s–70...