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Bastrop
(Encyclopedia)Bastrop băsˈtrŏpˌ [key], city (2020 pop. 9,711), seat of Morehouse parish, NE La.; founded ...mange
(Encyclopedia)mange mānj [key], contagious skin disease of domestic and wild animals. The several types of mange, including follicular and sarcoptic mange, are caused by various minute parasitic mites that burrow ...Carson, Rachel Louise
(Encyclopedia)Carson, Rachel Louise, 1907–64, American writer and marine biologist, b. Springdale, Pa., M.A. Johns Hopkins, 1932. Her well-known books on sea life—Under the Sea-Wind (1941), The Sea around Us (1...polychlorinated biphenyl
(Encyclopedia)polychlorinated biphenyl or PCB, any of a group of organic compounds originally widely used in industrial processes but later found to be dangerous environmental pollutants. Polychlorinated biphenyl i...VX
(Encyclopedia)VX vēˈĕks [key], nerve gas several times more toxic than sarin but less volatile. It kills within minutes if inhaled or deposited on the skin; protection from VX would require both protective suits...quassia
(Encyclopedia)quassia kwŏshˈə [key], name for several tropical trees and for a bitter extract from their bark. The extract containing complex terpenoid compounds called quassinoids is used medicinally as a bitte...naphthalene
(Encyclopedia)naphthalene năfˈthəlēnˌ [key], colorless, crystalline, solid aromatic hydrocarbon with a pungent odor. It melts at 80℃, boils at 218℃, and sublimes upon heating. It is insoluble in water, som...nicotiana
(Encyclopedia)nicotiana nĭkōˌshēāˈnə [key], any plant of the genus Nicotiana of the family Solanaceae (nightshade family). Most species are herbs native to tropical America, although there are a few North Am...bagworm
(Encyclopedia)bagworm, common name for the larva of small moths of the family Psychidae. The larva spins a silken cocoon as it travels, hence the term bagworm. When fully grown, the bagworm fastens its covering to ...entomology
(Encyclopedia)entomology, study of insects, an arthropod class that comprises about 900,000 known species, representing about three fourths of all the classified animal species. Insects are studied because of their...Browse by Subject
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