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stimulant

(Encyclopedia)stimulant, any substance that causes an increase in activity in various parts of the nervous system or directly increases muscle activity. Cerebral, or psychic, stimulants act on the central nervous s...

state of emergency

(Encyclopedia)state of emergency, situation in which a government or a government body is empowered to act with enhanced powers in order to respond to a crisis. The enhanced or emergency powers, and in many cases i...

Terbrugghen, Hendrick

(Encyclopedia)Terbrugghen, Hendrick hĕnˈdrĭk tĕrbro͝ogˈhən [key], 1588–1629, Dutch painter, a leading member of the Utrecht school. He was a pupil of the history painter Bloemaert before living (c.1604–1...

Say, Jean Baptiste

(Encyclopedia)Say, Jean Baptiste zhäN bätēstˈ sā [key], 1767–1832, French economist. In A Treatise on Political Economy (1803, tr. from the 4th ed. 1821) he effectively reorganized and popularized the theori...

Sessions, William Steele

(Encyclopedia)Sessions, William Steele, 1930–2020, U.S. government official, b. Fort Smith, Ark. After serving in the U.S. air force (1951–55), he attended Baylor Univ. (B.A. 1956, LL.B. 1958). A Republican, he...

disk plow

(Encyclopedia)disk plow or disk, farm implement employing a row or rows of concave circular steel disks that cut and pitch the soil in a way somewhat similar to a moldboard plow. It can be used in many situations w...

Donald, David Herbert

(Encyclopedia)Donald, David Herbert, 1920–2009, American historian, b. Goodman, Miss. After receiving his Ph.D. from the Univ. of Illinois in 1946, he taught at Columbia (1947–49; 1951–59), Smith (1949–51),...

Millar, John

(Encyclopedia)Millar, John, 1735–1801, Scottish philosopher and historian. Millar studied at Glasgow, where he became the chief disciple of Adam Smith. In 1761 Millar became professor of civil law at Glasgow, and...

planter

(Encyclopedia)planter, farm or garden implement that places propagating material such as seeds or seedlings into the ground, usually in rows. Broadcasting, i.e., scattering seed in all directions, by hand followed ...

Ross, Sir John

(Encyclopedia)Ross, Sir John, 1777–1856, British arctic explorer and rear admiral. In 1818 he went in search of the Northwest Passage but turned back after exploring Baffin Bay. Financed by Sir Felix Booth, he co...