GNU Collaborative International Dictionary of English

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1.       
   minium , n. [L. minium, an Iberian word, the Romans getting all their cinnabar from Spain; cf. Basque armineá.] (Chem.) A heavy, brilliant red pigment, consisting of an oxide of lead, Pb3O4, obtained by exposing lead or massicot to a gentle and continued heat in the air.  It is used as a cement, as a paint, and in the manufacture of flint glass.  Called also red lead, lead tetroxide, lead orthoplumbate, mineral orange, mineral red, Paris red, Saturn red, and less definitively, lead oxide.
   1913 Webster