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empyema
(Encyclopedia) empyemaempyemaĕmpē-ēˈmə [key], persistent purulent discharge into a cavity such as the pleural space or the gallbladder. Empyema results as a complication of bacterial infections such…strabismus
(Encyclopedia) strabismusstrabismusstrəbĭzˈməs [key], inability of the eyes to focus together because of an imbalance in the muscles that control eye movement; also called squint. It is a consequence…Year 2000 problem
(Encyclopedia) Year 2000 problem,&sp;Y2K problem, or millennium bug, in computer science, a design flaw in the hardware or software of a computer that caused erroneous results when working with…bead test
(Encyclopedia) bead test, test used in the identification of certain metals. Some metallic ions that cannot be identified by a flame test are identified by a bead test. The test can also be used to…Gordon and Betty Moore Foundation
(Encyclopedia) Gordon and Betty Moore Foundation, private philanthropic organization established in 2000 by Gordon Moore, co-founder of Intel Corp., and his wife Betty. The foundation funds projects…iridescence
(Encyclopedia) iridescenceiridescenceĭrˌədĕsˈəns [key], exhibition of rainbowlike colors on a surface. It usually results from interference when light composed of different wavelengths is reflected…Nordenskjöld, Nils Otto Gustaf
(Encyclopedia) Nordenskjöld, Nils Otto Gustaf, 1869–1928, Swedish geographer and explorer, nephew of Nils Adolf Erik Nordenskjöld. He headed an expedition to Patagonia (1895–97) and later explored…silverpoint
(Encyclopedia) silverpoint, method of drawing whereby a silver-tipped instrument is dragged across paper prepared with ground bone dust and gum water and then tinted with a pigment. The procedure…halo, in meteorology
(Encyclopedia) halo, in meteorology, short-lived circles or arcs, and less commonly spikes and crosses, of colored or whitish light surrounding the moon or sun or in clouds as seen from above. A halo…Theorell, Axel Hugo Teodor
(Encyclopedia) Theorell, Axel Hugo Teodor, 1903–82, Swedish biochemist, M.D. Caroline Institute, Stockholm, 1930. The results of an illness caused him to abandon his career as a physician, and he…Trending
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