bentonite
/ˈbɛntənaɪt/
noun
- A soft clay formed from volcanic ash, used in drilling fluids, cat litter, and as a binding agent.
- Many brands of cat litter use bentonite because it clumps when wet.
- The winemaker used bentonite to clarify the wine by removing impurities.
- Bentonite is added to drilling mud to help lubricate and cool the drill bit.
Synonyms