(Encyclopedia) Tay-Sachs diseaseTay-Sachs diseasetāˈ-săksˈ [key], rare hereditary disease caused by a genetic mutation that leaves the body unable to produce an enzyme necessary for fat metabolism in…
(Encyclopedia) Gettysburg Address, speech delivered by Abraham Lincoln on Nov. 19, 1863, at the dedication of the national cemetery on the Civil War battlefield of Gettysburg, Pa. It is one of the…
(Encyclopedia) Chandrasekhar, SubrahmanyanChandrasekhar, Subrahmanyans&oobreve;bˌrəmänˈyən chŭnˌdrəsāˈkər [key], 1910–95, American astrophysicist, b. Lahore, India (now Pakistan). He became a…
(Encyclopedia) artificial life support, systems that use medical technology to aid, support, or replace a vital function of the body that has been seriously damaged. Such techniques include…
(Encyclopedia) BabenbergBabenbergbäˈbənbĕrk [key], ruling house of Austria (976–1246). It possibly descended from, or succeeded, a powerful Franconian family of the 9th cent. from whose castle the…
(Encyclopedia) net neutrality, the principle or requirement that Internet service providers (ISPs) allow equal access to all Internet content. The issue of insuring net neutrality has become of…
(Encyclopedia) aye-ayeaye-ayeīˈīˈ [key], name for an aberrant primate, Daubentonia madagascariensis, related to the lemurs but distinguished by its specialized teeth and fingers. A large nocturnal…
(Encyclopedia) Blitzstein, Marc (Marcus Samuel Blitzstein), 1905–64, American composer, pianist, and librettist, b. Philadelphia. After attending the Univ. of Pennsylvania and the Curtis Institute of…
(Encyclopedia) Butler, Joseph, 1692–1752, English bishop and exponent of natural theology. Butler held a series of church offices, ending his career as bishop of Durham. His principle writings are…
(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…
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