Definitions for "massicot"
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 mineral form of lead monoxide; in the form of yellow powder it is used as a pigment
a yellow lead(II) oxide, PbO.