massicot Meaning, Definition & Usage

  1. noun the mineral form of lead monoxide; in the form of yellow powder it is used as a pigment
    massicotite.

WordNet

Mas"si*cot noun
Etymology
F. massicot; E. masticot is a corruption.
Definitions
  1. (Chem.) 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. now pref. Lead monoxide; also, lead oxide yellow, as opposed to red lead, which is lead tetroxide Pb3O4 ✍ Massicot is sometimes used by painters, and also as a drier in the composition of ointments and plasters.

Webster 1913