Hypertext Webster Gateway: "PbO"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Massicot \Mas"si*cot\, n. [F. massicot; E. masticot is a
corruption.] (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.
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