n. lead monoxide, PbO, obtained as a yellow amorphous powder, the fused and crystalline form of which is called litharge; lead ocher. It is used as a pigment; also, lead oxide yellow, as opposed to red lead, which is lead tetroxide Pb3O4.
the GNU version of the Collaborative International Dictionary of English
n. Lead monoxide (also called Lead protoxide), PbO, obtained as a yellow amorphous powder, the fused and crystalline form of which is called litharge; lead ocher. It is used as a pigment. It is also called lead oxide yellow, as opposed to red lead, which is lead tetroxide Pb3O4.
The Century Dictionary and Cyclopedia
n. Protoxid of lead, or yellow oxid of lead, PbO.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the mineral form of lead monoxide; in the form of yellow powder it is used as a pigment
Word Usage
"Several, including massicot or giallolino, purple of Cassius reference, and Drebbel's red, predated the epoch."