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ozone
(Encyclopedia) ozoneozoneōˈzōn [key], an allotropic form of the chemical element oxygen (see allotropy). Pure ozone is an unstable, faintly bluish gas with a characteristic fresh, penetrating odor.…fusel oil
(Encyclopedia) fusel oilfusel oilfy&oomacr;ˈzəl [key], oily, colorless liquid with a disagreeable odor and taste. It is a mixture of alcohols (largely amyl alcohols) and fatty acids, formed…methyl
(Encyclopedia) methylmethylmĕthˈəl [key], CH3, organic free radical or alkyl group derived from methane by the removal of one hydrogen atom.phenyl
(Encyclopedia) phenylphenylfĕnˈəl [key], C6H5, organic free radical or alkyl group derived from benzene by removing one hydrogen atom.Pelletier, Pierre Joseph
(Encyclopedia) Pelletier, Pierre JosephPelletier, Pierre Josephpyĕr zhôzĕfˈ pĕlətyāˈ [key], 1788–1842, French chemist. With J. B. Caventou, he was cofounder of alkaloid chemistry and codiscoverer of…cyanide
(Encyclopedia) cyanidecyanidesīˈənīdˌ [key], chemical compound containing the cyano group, –CN. Cyanides are salts or esters of hydrogen cyanide (hydrocyanic acid, HCN) formed by replacing the…eutrophication
(Encyclopedia) eutrophicationeutrophicationy&oomacr;trōˌfĭkāˈshən [key], aging of a lake by biological enrichment of its water. In a young lake the water is cold and clear, supporting little life…mechanism
(Encyclopedia) mechanism, philosophical theory about the nature of organic systems, holding that organisms are machines in the sense that they are material systems. Mechanism seeks to explain…Louis, Morris
(Encyclopedia) Louis, Morris, 1912–62, American painter, b. Baltimore. A practitioner of color-field painting, Louis was noted for soaking poured paint through unsized and often unstretched canvas.…loam
(Encyclopedia) loam, soil composed of sand, silt, clay, and organic matter in evenly mixed particles of various sizes. More fertile than sandy soils, loam is not stiff and tenacious like clay soils.…Trending
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