noun Download 🔗Share 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. Examples : "The artist preferred using massicot over other yellows because its subtle, earthy tone was perfect for painting the sun in his landscape. " substance material chemistry compound mineral science color Chat with AIVocabulary GamePractice Reading