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montmorillonite

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noun mont·mo·ril·lon·ite \ˌmänt-mə-ˈri-lə-ˌnīt, -ˈrē-ə-ˌnīt\

Definition of montmorillonite

  1. :  a soft clayey water-absorbent mineral that is a hydrous aluminum silicate

montmorillonitic

play \-ˌri-lə-ˈni-tik, -ˌrē-ə-ˈni-\ adjective


Origin and Etymology of montmorillonite

French, from Montmorillon, commune in western France


First Known Use: 1854


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