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yttrium
(Encyclopedia)yttrium ĭtˈrēəm [key] [for Ytterby, a town in Sweden], metallic chemical element; symbol Y; at. no. 39; at. wt. 88.90585; m.p. about 1,522℃; b.p. 3,338℃; sp. gr. about 4.45; valence +3. Yttriu...Sturm und Drang
(Encyclopedia)Sturm und Drang shto͝orm o͝ont dräng [key] or Storm and Stress, movement in German literature that flourished from c.1770 to c.1784. It takes its name from a play by F. M. von Klinger, Wirrwarr; od...Sutter, John Augustus
(Encyclopedia)Sutter, John Augustus, 1803–80, American pioneer, b. Kandern, Baden, of Swiss parents. His original name was Johann August Suter. He emigrated to the United States in 1834, went to St. Louis, then t...Sills, Beverly
(Encyclopedia)Sills, Beverly, 1929–2007, American coloratura soprano, b. Brooklyn, N.Y., as Belle Silverman. Her childhood career as a radio singer (when she was first nicknamed “Bubbles”) led to voice studie...hardness
(Encyclopedia)hardness, property of matter commonly described as the resistance of a substance to being scratched by another substance. The degree of hardness is relative, different substances being compared with o...Göttingen
(Encyclopedia)Göttingen götˈĭng-ən [key], city, Lower Saxony, central Germany, on the Leine River. It is ...Zinzendorf, Nikolaus Ludwig, Graf von
(Encyclopedia)Zinzendorf, Nikolaus Ludwig, Graf von nēˈkōlous lo͝otˈvĭkh gräf fən tsĭnˈtsəndôrf [key], 1700–1760, German churchman, patron and bishop of the refounded Moravian Church, b. Dresden. Rear...vocational education
(Encyclopedia)vocational education, training designed to advance individuals' general proficiency, especially in relation to their present or future occupations. The term does not normally include training for the ...calculus of variations
(Encyclopedia)calculus of variations, branch of mathematics concerned with finding maximum or minimum conditions for a relationship between two or more variables that depends not only on the variables themselves, a...Bouillon, Henri de La Tour d'Auvergne, vicomte de Turenne, duc de
(Encyclopedia)Bouillon, Henri de La Tour d'Auvergne, vicomte de Turenne, duc de dük də bo͞oyôNˈ [key], 1555–1623, marshal of France, diplomat, and Protestant leader. He served with Henry IV against the Cath...Browse by Subject
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