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Praxidike

(Encyclopedia)Praxidike, in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. ...

Taygete

(Encyclopedia)Taygete, in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. ...

Themisto

(Encyclopedia)Themisto, in astronomy, one of the 39 known moons, or natural satellites, of Jupiter. ...

whetstone

(Encyclopedia)whetstone, natural or manufactured stone used as an abrasive solid to sharpen tools. It is used dry, with water, or with oil. Such a stone of the finer grade used with oil is usually called an oilston...

Sand Springs

(Encyclopedia)Sand Springs, city (1990 pop. 15,346), Tulsa co., NE Okla., an industrial suburb of Tulsa, on the Arkansas River; founded 1907. There are oil and natural-gas wells and food-processing and chemical ind...

vinegar

(Encyclopedia)vinegar, sour liquid consisting mainly of acetic acid and water, produced by the action of bacteria on dilute solutions of ethyl alcohol derived from previous yeast fermentation. The coloring and flav...

Barnard, Frederick Augustus Porter

(Encyclopedia)Barnard, Frederick Augustus Porter, 1809–89, American educator and mathematician, b. Sheffield, Mass., grad. Yale, 1828. After tutoring at Yale and teaching in institutions for the deaf and mute, he...

Copperbelt

(Encyclopedia)Copperbelt, mining region, N central Zambia, central Africa. A natural extension of the mineral-rich region of SE Congo, the Copperbelt is one of the richest sources of copper in the world. Cobalt, se...

Vienna University

(Encyclopedia)Vienna University, at Vienna, Austria; founded 1365. It was reorganized in 1377, 1384, and 1850. It has faculties of Roman Catholic theology, Protestant theology, humanities, law and political science...