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rape, in botany

(Encyclopedia)rape, in botany, annual herb (Brassica napus) of the family Cruciferae (or Brassicaceae; mustard family), belonging to the same genus as the cabbage, the mustard plant, and the turnip (which it resemb...

stethoscope

(Encyclopedia)stethoscope stĕthˈəskōpˌ [key] [Gr.,=chest viewer], instrument that enables the physican to hear the sounds made by the heart, the lungs, and various other organs. The earliest stethoscope, devis...

silica

(Encyclopedia)silica or silicon dioxide, chemical compound, SiO2. It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white. It occurs in sev...

Serra, Richard

(Encyclopedia)Serra, Richard, 1939–, American sculptor, b. San Francisco; grad. Univ. of California, Santa Barbara (B.A., 1961), Yale (B.F.A., M.F.A., 1974). Many of his early works (1960s) are cast in rubber or ...

shock absorber

(Encyclopedia)shock absorber, device for reducing the effect of a sudden shock by the dissipation of the shock's energy. On an automobile, springs and shock absorbers are mounted between the wheels and the frame. W...

San Jose, city, United States

(Encyclopedia)San Jose sănəzāˈ, săn hōzāˈ [key], city (1990 pop. 782,248), seat of Santa Clara co., W central Calif.; founded 1777, inc. 1850. Along with San Francisco and Oakland the city comprises the fou...

Dayton

(Encyclopedia)Dayton, city (2020 pop. 137,644), seat of Montgomery co., SW Ohio, on the Great Miami River where it is joined by the Stillwater River; inc. 1805. It is...

Intifada

(Encyclopedia)Intifada ĭntēfăˈdĕ [key] [Arab.,=uprising, shaking off], the Palestinian uprising during the late 1980s and early 90s in the West Bank and Gaza Strip, areas that had been occupied by Israel since...

antioxidant

(Encyclopedia)antioxidant, substance that prevents or slows the breakdown of another substance by oxygen. Synthetic and natural antioxidants are used to slow the deterioration of gasoline and rubber, and such antio...

Hiroshima

(Encyclopedia)Hiroshima hĭrˌōshēˈmə, hērōˈshmä [key], city, capital of Hiroshima prefectu...