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Cardoso, Fernando Henrique

(Encyclopedia)Cardoso, Fernando Henrique fərnäNˈdo͞o ānrēˈkə kärdōˈso͞o [key], 1931–, Brazilian sociologist and politician, president of Brazil (1995–2002), b. Rio de Janeiro. Originally a sociology...

airfoil

(Encyclopedia)airfoil, surface designed to develop a desired force by reaction with a fluid, especially air, that is flowing across the surface. For example, the fixed wing surfaces of an airplane produce lift, whi...

meditation

(Encyclopedia)meditation, religious discipline in which the mind is focused on a single point of reference. It may be a means of invoking divine grace, as in the contemplation by Christian mystics of a spiritual th...

indulgence

(Encyclopedia)indulgence, in the Roman Catholic Church, the pardon of temporal punishment due for sin. It is to be distinguished from absolution and the forgiveness of guilt. The church grants indulgences out of th...

alpaca

(Encyclopedia)alpaca ălpăkˈə [key], partially domesticated South American mammal, Lama pacos, of the camel family. Genetic studies show that it is a descendant of the vicuña. Although the flesh is sometimes us...

Snowden, Philip Snowden, 1st Viscount

(Encyclopedia)Snowden, Philip Snowden, 1st Viscount snōˈdən [key], 1864–1937, British statesman. Born to poverty, he was a civil service clerk until crippled by a spinal ailment. Resigning in 1893, he began to...

Boutwell, George Sewall

(Encyclopedia)Boutwell, George Sewall so͞oˈəl boutˈwəl, –wĕl [key], 1818–1905, American politician, b. Brookline, Mass. He served seven terms in the Massachusetts legislature between 1842 and 1851, was el...

nitric acid

(Encyclopedia)nitric acid, chemical compound, HNO3, colorless, highly corrosive, poisonous liquid that gives off choking red or yellow fumes in moist air. It is miscible with water in all proportions. It forms an a...

ruthenium

(Encyclopedia)ruthenium ro͞othēˈnēəm [key], metallic chemical element; symbol Ru; at. no. 44; at. wt. 101.07; m.p. about 2,310℃; b.p. about 3,900℃; sp. gr. 12.41 at 20℃; valence commonly +2, +3, +4, +6, ...

aldehyde

(Encyclopedia)CE5 Aldehydes aldehyde ălˈdəhīd [key] [alcohol + New Lat. dehydrogenatus=dehydrogenated], any of a class of organic compounds that contain the carbonyl group, >C=-->O, and in which t...