Meaning of red mud in English:

red mud


  • 1Geology
    A mud of terrestrial origin, found on continental shelves and in other shallow waters, and coloured red by iron oxides.

  • 2A residue from the extraction of alumina from bauxite, coloured red by iron impurities.


Late 17th century; earliest use found in Robert Boyle (1627–1691), natural philosopher.