English Explanatory Dictionary

bentonite

English dictionary entry

Meanings

noun
  1. Any of several impure clay minerals consisting mostly of montmorillonite.
  2. A porous clay formed by the decomposition of volcanic ash that swells 5 to 6 times its original volume in the presence of water.

Word forms

bentonite bentonites

Etymology

From Benton + -ite, after the place where it was first mined: Fort Benton, Montana.

Synonyms

E558 when used as an anti-caking agent

Derived words

bentonitic bentonitization K-bentonite potash bentonite potassium bentonite
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