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hafnium

(Encyclopedia) hafniumhafniumhăfˈnēəm [key], metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227℃; b.p. 4,602℃; sp. gr. 13.31 at 20℃; valence +4. Hafnium is a lustrous…

electrodynamics

(Encyclopedia) electrodynamics, study of phenomena associated with charged bodies in motion and varying electric and magnetic fields (see charge; electricity); since a moving charge produces a…

Belasco, David

(Encyclopedia) Belasco, DavidBelasco, Davidbəlăsˈkō [key], 1853–1931, American theatrical manager and producer, b. San Francisco. He was actively connected with the theater from his youth, and while…

toxoplasmosis

(Encyclopedia) toxoplasmosis, infection caused by Toxoplasma gondii, a single-celled parasitic microorganism that can infect most warm-blooded animals but reproduces only in animals of the cat family…

Sosa, Sammy

(Encyclopedia) Sosa, Sammy (Samuel Kevin Sosa Peralta)Sosa, Sammysämwĕlˈ sōˈsä pĕrälˈtä [key], 1968–, Dominican baseball player. An outfielder and designated hitter, he broke into the major leagues…

Huangshi

(Encyclopedia) Huangshi or HwangshihHuangshiboth: hwäng-shŭr [key], city (1994 est. pop. 538,400), E Hubei prov., China, on the Chang (Yangtze) River. It is a new industrial center, built after 1950…

ethanol

(Encyclopedia) ethanolethanolĕthˈənōlˌ [key] or ethyl alcohol, CH3CH2OH, a colorless liquid with characteristic odor and taste; commonly called grain alcohol or simply alcohol. Ethanol is used…

Holstein, Friedrich von

(Encyclopedia) Holstein, Friedrich vonHolstein, Friedrich vonfrēˈdrĭkh fən hôlˈshtīn [key], 1837–1909, German diplomat. After the Congress of Berlin (1878) he became a powerful figure in shaping…

hydrogen sulfide

(Encyclopedia) hydrogen sulfide, chemical compound, H2S, a colorless, extremely poisonous gas that has a very disagreeable odor, much like that of rotten eggs. It is slightly soluble in water and is…

flamingo

(Encyclopedia) flamingo, common name for a large pink or red wading bird, similar to the related heron, stork, and spoonbill but with a longer neck, webbed feet, and a unique down-bent bill.…