lead dioxide

\\ˈled-\ noun

: a poisonous compound PbO₂ that occurs naturally as the mineral plattnerite but is usually obtained as an insoluble brown crystalline powder by oxidation (as by electrolysis) of lead monoxide or lead salts and that forms the active material of the positive plates of lead-lead acid cells and as an oxidizing agent in the dye and chemical industries

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/led/, Chem.

a brown crystalline compound, PbO₂, toxic, insoluble in water and alcohol, soluble in glacial acetic acid: used as an oxidizing agent, in lead-acid batteries, and in analytical chemistry.

[1900-05]

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lead dioxide «lehd»,

a highly toxic crystalline compound, used as an oxidizing agent, as an electrode in storage batteries, as a mordant in textiles, and in the manufacture of explosives; lead peroxide. Formula: PbO₂