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anglesite

(Encyclopedia) anglesiteanglesiteăngˈgləsīt [key], pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, crystallizing in the…

Treece, Henry

(Encyclopedia) Treece, Henry, 1912–66, English poet and novelist. He served as an intelligence officer in the Royal Air Force during World War II, after which he taught school for many years. He is…

Perrot, Nicolas

(Encyclopedia) Perrot, NicolasPerrot, Nicolasnēkôläˈ [key]Perrot, Nicolas pĕrōˈ [key], 1644–c.1718, French explorer in Canada and the Old Northwest. He came to New France as a child and, in service…

peacock

(Encyclopedia) peacock or peafowl, large bird of the genus Pavo, in the pheasant family, native to E Asia. There are two main species, the common (Pavo cristatus), and the Javanese (P. musticus)…

Gallant, Mavis

(Encyclopedia) Gallant, Mavis (Mavis Leslie Young Gallant)Gallant, Mavisgă-lăntˈ [key], 1922–2014, Canadian writer, b. Montreal. After graduating from high school, she was a newspaper feature writer…

amaranth

(Encyclopedia) CE5 Green amaranth, Amaranthus retroflexus amaranthamaranthămˈərănthˌ [key] [Gr.,=unfading], common name for the Amaranthaceae (also commonly known as the pigweed family), a family…

vetch

(Encyclopedia) vetch, common name for many weak-stemmed, leguminous herbs of the genus Vicia of the family Leguminosae (pulse family). The vetches are chiefly annuals, distributed over temperate…

seaweed

(Encyclopedia) seaweed, name commonly used for the multicellular marine algae. Simpler forms, consisting of one cell (e.g., the diatom) or of a few cells, are not generally called seaweeds; these…

spontaneous combustion

(Encyclopedia) spontaneous combustion, phenomenon in which a substance unexpectedly bursts into flame without apparent cause. In ordinary combustion, a substance is deliberately heated to its…

siderite

(Encyclopedia) sideritesideritesĭdˈərīt [key] or chalybitesideritekălˈĭbīt [key], a mineral, varying in color from brown, green, or gray to black and occurring in nature in massive and crystalline…