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agrimony
(Encyclopedia) agrimonyagrimonyăgˈrĭmōˌnē [key], any plant of the genus Agrimonia, perennials of the family Rosaceae (rose family) native to north temperate zones, to Brazil, and to Africa. They are…VX
(Encyclopedia) VXVXvēˈĕks [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…trinitrotoluene
(Encyclopedia) trinitrotoluene or TNTtrinitrotoluenetrīˌnīˌtrōtŏlˈy&oomacr;ēn [key], CH3C6H2(NO2)3, crystalline, aromatic compound that melts at 81℃. It is prepared by the nitration of toluene.…potassium nitrate
(Encyclopedia) potassium nitrate, chemical compound, KNO3, occurring as colorless, prismatic crystals or as a white powder; it is found pure in nature as the mineral saltpeter, or niter. (The name…enthalpy
(Encyclopedia) enthalpyenthalpyĕnˈthălpē [key], measure of the heat content of a chemical or physical system; it is a quantity derived from the heat and work relations studied in thermodynamics. As a…sulfonic acid
(Encyclopedia) sulfonic acidsulfonic acidsəlfŏnˈĭk [key], organic compound containing the functional group RSO2OH, which consists of a sulfur atom, S, bonded to a carbon atom that may be part of a…Geoffroy, Étienne François
(Encyclopedia) Geoffroy, Étienne FrançoisGeoffroy, Étienne Françoisātyĕnˈ fräNswäˈ zhôfrwäˈ [key], 1672–1731, French physician and chemist, also known as Geoffroy the Elder. He became a pharmacist in…damask
(Encyclopedia) damaskdamaskdămˈəsk [key] [from Damascus], fabric of silk, wool, linen, cotton, or synthetic fibers, with a pattern formed by the weaving; e.g., the ground may be in twill weave, and…alizarin
(Encyclopedia) alizarinalizarinəlĭzˈərĭn [key], or 1,2-dihydroxyanthraquinone, mordant vegetable dye obtained originally from the root of the madder plant (Rubia tinctorum), in which it occurs as a…ferrous sulfate
(Encyclopedia) ferrous sulfate or iron (II) sulfate, chemical compound, FeSO4. It is known as the monohydrate, FeSO4·H2O; the tetrahydrate, FeSO4·4H2O; the pentahydrate, FeSO4·5H2O; and the…Trending
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