Definition of montmorillonitic in English:

montmorillonitic

adjective

Mineralogy
  • Resembling or containing montmorillonite.

Origin

1930s; earliest use found in American Midland Naturalist. From montmorillonite + -ic.

Pronunciation

montmorillonitic

/ˌmɒntmərɪləˈnɪtɪk/