montmorillonite
mont·mo·ril·lon·ite
noun\ˌmänt-mə-ˈri-lə-ˌnīt, -ˈrē-ə-ˌnīt\
Definition of MONTMORILLONITE
: a soft clayey water-absorbent mineral that is a hydrous aluminum silicate
— mont·mo·ril·lon·it·ic \-ˌri-lə-ˈni-tik, -ˌrē-ə-ˈni-\ adjective
Origin of MONTMORILLONITE
French, from Montmorillon, commune in western France
First Known Use: 1854
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