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Veterans Affairs, United States Department of

(Encyclopedia)Veterans Affairs, United States Department of, federal executive department established to operate programs to benefit veterans and their families. The department was established in 1989; its predeces...

Engler, Adolf

(Encyclopedia)Engler, Adolf äˈdôlf ĕngˈlər [key], 1844–1930, German botanist. He emphasized the importance of geological history in the study of plant geography, and worked out an influential system of plan...

heroin

(Encyclopedia)heroin hĕˈrəwən [key], opiate drug synthesized from morphine (see narcotic). Originally produced in 1874, it was thought to be not only nonaddictive but useful as a cure for respiratory illness an...

center of mass

(Encyclopedia)center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of t...

Murchison, Sir Roderick Impey

(Encyclopedia)Murchison, Sir Roderick Impey mûrˈkĭsən [key], 1792–1871, British geologist. He served in the Napoleonic Wars but after the peace turned his attention to science. In the 1830s he undertook the i...

Raiffeisen, Friedrich Wilhelm

(Encyclopedia)Raiffeisen, Friedrich Wilhelm frēˈdrĭkh vĭlˈhĕlm rīfˈīˌzən [key], 1818–88, German leader in the cooperative movement. Between 1845 and 1865 he was mayor of several German towns. After the...

momentum

(Encyclopedia)momentum mōmĕnˈtəm [key], in mechanics, the quantity of motion of a body, specifically the product of the mass of the body and its velocity. Momentum is a vector quantity; i.e., it has both a magn...

barcode

(Encyclopedia)CE5 Barcode barcode, computer coding system that uses a printed pattern of lines and bars to identify such things as products, mail and packages, and customer accounts; the term also is used for s...

Pinyin

(Encyclopedia)Pinyin pĭnˈyĭnˈ [key] [Chin. Hanyu pinyin = Chinese phonetic alphabet], system of romanization of Chinese written characters, approved in 1958 by the government of the People's Republic of Chi...

Gurugram

(Encyclopedia)Gurugram, formerly Gurgaon gûrˈgoun [key], city, Haryana state, N India, 15 mi (24 km) ...