Massicot

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Litharge \Lith"arge\ (l[i^]th"[.a]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}.
     [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  massicot \mas"si*cot\, n. [F. massicot; E. masticot is a
     corruption.] (Chem.)
     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}.
     [1913 Webster +PJC]
  
     Note: Massicot is sometimes used by painters, and also as a
           drier in the composition of ointments and plasters.
           [1913 Webster]

From WordNet (r) 2.0 [wn]:

  massicot
       n : the mineral form of lead monoxide; in the form of yellow
           powder it is used as a pigment [syn: {massicotite}]