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Zuckerberg, Mark Elliot
(Encyclopedia)Zuckerberg, Mark Elliot, 1984–, American computer programmer and business executive, b. Dobbs Ferry, N.Y. A computer prodigy as a child, he entered Harvard in 2002 and two years later co-founded The...histamine
(Encyclopedia)histamine hĭsˈtəmēnˌ [key], organic compound derived in the body from the amino acid histidine by the removal of a carboxyl group (COOH). Although found in many plant and animal tissues, histamin...sequence
(Encyclopedia)sequence, in mathematics, ordered set of mathematical quantities called terms. A sequence is said to be known if a formula can be given for any particular term using the preceding terms or using its p...reconnaissance satellite
(Encyclopedia)reconnaissance satellite, artificial satellite launched by a country to provide intelligence information on the military activities of foreign countries. There are four major types. Early-warning sate...button
(Encyclopedia)button, knoblike appendage used on wearing apparel either for ornament or for fastening. Although buttons were sometimes used as fasteners by Greeks and Romans, they were more often merely ornamental ...Mark, Gospel according to
(Encyclopedia)Mark, Gospel according to, 2d book of the New Testament. The shortest of the four Gospels and probably the earliest, it is usually thought to have been composed shortly before the destruction of the T...turbine
(Encyclopedia) CE5 Types of turbines turbine, rotary engine that uses a continuous stream of fluid (gas or liquid) to turn a shaft that can drive machinery. A water, or hydraulic, turbine is used to drive electr...Exodus
(Encyclopedia)Exodus ĕkˈsədəs [key], book of the Bible, 2d of the 5 books of the Law (the Pentateuch or Torah) ascribed by tradition to Moses. The book continues the story of the ancestors of Israel in Egypt, n...Livy
(Encyclopedia)Livy (Titus Livius) lĭvˈē [key], 59 b.c.–a.d. 17, Roman historian, b. Patavium (Padua), probably of noble family. He lived most of his life in Rome. The breadth of his education is apparent in hi...Smith, W. Eugene
(Encyclopedia)Smith, W. Eugene (William Eugene Smith), 1918–78, American photojournalist, b. Wichita, Kan. Smith is considered one of the principal masters of modern photojournalism. The distorted newspaper cover...Browse by Subject
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