Definition of litharge in English:

litharge

noun

  • [mass noun] Lead monoxide, especially a red form used as a pigment and in glass and ceramics.

    • ‘The ore, which ran to 25 percent silver, was melted in a small clay or stone furnace called a guaira or wayra, using lead oxide (litharge) as a flux.’
    • ‘Fluxing agents include lead oxide or litharge which is used as a collector of precious metals.’

Origin

Middle English: from Old French litarge, via Latin from Greek litharguros, from lithos stone + arguros silver.

Pronunciation:

litharge

/ˈlɪθɑːdʒ/