Lith"arge (l&ibreve;th"&adot;rj), n. [OE.
litarge, F. litharge, L.
lithargyrus, Gr. liqa`rgyros the scum or foam
of silver; li`qos stone + 'a`rgyros silver. Litharge is found in silverbearing lead ore.]
(Chem.)
Lead monoxide; a yellowish red substance, obtained as an amorphous powder, or crystallized in fine scales, by heating lead moderately in a current of
air or by
calcining lead nitrate or carbonate. It is used in making flint glass, in glazing earthenware, in making red
lead or minium, etc. Called also massicot.