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pyroclastic flow

(Encyclopedia)pyroclastic flow, turbulent, fluidized mixture of rock, volcanic ash, and hot gas that moves like an avalanche away from a volcanic eruption. A pyroclastic flow may contain a mix of rock fragments ran...

candelabrum

(Encyclopedia)candelabrum kănˌdəläˈbrəm [key], primarily a support for candles, designed in the form of a turned baluster or a tapered column, also a branched candlestick or a lampstand. Though most used and ...

Masaoka Shiki

(Encyclopedia)Masaoka Shiki mäˈsäˈōˈkä shēˈkē [key], 1867–1902, Japanese waka and haiku poet. Founder of the literary magazine Hototogisu and patron to a number of young poets, Shiki played a leading ro...

Brown-Séquard, Charles Édouard

(Encyclopedia)Brown-Séquard, Charles Édouard broun-sākärˈ, –sākwärˈ [key], 1817–94, physiologist, b. Mauritius, of French and American parents. He taught at Harvard (1864–68), practiced medicine in Ne...

Anderson, Jack

(Encyclopedia)Anderson, Jack (Jackson Northman Anderson), 1922–2005, American newspaper columnist, b. Long Beach, Calif. After serving as a Mormon missionary (1941–44) and a term as a war correspondent during 1...

Lexington and Concord, battles of

(Encyclopedia)Lexington and Concord, battles of, opening engagements of the American Revolution, Apr. 19, 1775. After the passage (1774) of the Intolerable Acts by the British Parliament, unrest in the colonies inc...

Jones, Robert Tyre, Jr.

(Encyclopedia)Jones, Robert Tyre, Jr. (Bobby Jones), 1902–71, American golfer, b. Atlanta, Ga. A lawyer, he became a golf devotee. Jones won the National Open (1923, 1926, 1929–30), the National Amateur (1924�...

strychnine

(Encyclopedia)strychnine strĭkˈnĭn [key], bitter alkaloid drug derived from the seeds of a tree, Strychnos nux-vomica, native to Sri Lanka, Australia, and India. It has been used as a rat poison for five centuri...

distillation

(Encyclopedia)distillation, process used to separate the substances composing a mixture. It involves a change of state, as of liquid to gas, and subsequent condensation. The process was probably first used in the p...

orders of architecture

(Encyclopedia)CE5 Orders of architecture orders of architecture. In classical tyles of architecture the various columnar types fall, in general, into the five so-called classical orders, which are named Doric, ...