Webster's Revised Unabridged Dictionary (1913)

Webster's Revised Unabridged Dictionary (1913 + 1828)

Displaying 1 result(s) from the 1913 edition:

Minium (Page: 927)

Min"i*um (?; 277), 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.<-- also called lead tetroxide, lead orthoplumbate, mineral oange, mineral red, Paris red, Saturn red, and less definitively, lead oxide -->

Displaying 1 result(s) from the 1828 edition:

MIN''IUM, n. [L.] The red oxyd of lead, produced by calcination. Lead exposed to air while melting is covered with a gray dusky pellicle. This taken off and agitated becomes a greenish gray powder, inclining to yellow. This oxyd, separated by sifting from the grains of lead which it contains, and exposed to a more intense heat, takes a deep yellow color, and in this state it is called massicot. The latter, slowly heated, takes a beautiful red color, and is called minium.