Dictionary  red' lead'Pronunciation: (led), [key] —n. an orange to red, heavy, earthy, water-insoluble, poisonous powder, Pb3O4, obtained by heating litharge in the presence of air: used chiefly as a paint pigment, in the manufacture of glass and glazes, and in storage batteries. Also called minium. Cf. litharge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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