Definition of montmorillonite in English:


Line breaks: mont|mor¦il¦lon|ite
Pronunciation: /ˌmɒntməˈrɪlənʌɪt


[mass noun]
  • An aluminium-rich clay mineral of the smectite group, containing some sodium and magnesium.
    More example sentences
    • To test their theory, the researchers added small particles of montmorillonite - a clay widespread in the environment.
    • The three investigators found that a porous clay called montmorillonite, already known to encourage the linking of nucleic acids, also has an effect on fatty acids, the building blocks of cell membranes.
    • Ancient deposits of weathered volcanic ash containing the special healing mud known as montmorillonite have been found on a farm 15 km east of Northampton.


mid 19th century: from Montmorillon, the name of a town in France, + -ite1.

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