bentonite: meaning, definition, pronunciation and examples
LowTechnical / Industrial
Quick answer
What does “bentonite” mean?
A type of absorbent clay formed from volcanic ash, composed primarily of montmorillonite.
Audio
Pronunciation
Definition
Meaning and Definition
A type of absorbent clay formed from volcanic ash, composed primarily of montmorillonite.
The clay is widely used as a drilling mud, binder, sealant, and in various industrial applications due to its high absorbency and swelling properties when wet.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning. Term is identical in both varieties due to its technical nature.
Connotations
Neutral, purely technical/material.
Frequency
Equally low in both, used primarily in specialized fields.
Grammar
How to Use “bentonite” in a Sentence
The [material] contains bentonite.They used bentonite to [verb: seal/stabilise/bind].Vocabulary
Collocations
Examples
Examples of “bentonite” in a Sentence
adjective
British English
- The bentonite slurry is essential for the tunnelling project.
- They ordered bentonite seals for the landfill.
American English
- They used a bentonite slurry for the drilling operation.
- The bentonite liner prevents leakage.
Usage
Meaning in Context
Business
Used in mining, drilling, and cosmetics supply contracts.
Academic
Common in geology, materials science, and environmental engineering papers.
Everyday
Virtually never used; if encountered, likely on cosmetic product labels (e.g., 'bentonite clay mask').
Technical
Core term in drilling engineering, geotechnics, and foundry work.
Watch out
Common Mistakes When Using “bentonite”
- Incorrect: 'bentonight' (adding 'gh').
- Incorrect: using as a countable noun (e.g., 'a bentonite'). It is generally uncountable.
FAQ
Frequently Asked Questions
Some clumping cat litters are made from bentonite clay due to its absorbent properties, but not all bentonite is used for this purpose.
Food-grade bentonite (calcium bentonite) is sometimes used as a detoxifying supplement, but it must be specifically purified for human consumption.
It is used as a fining agent to clarify wine by removing unstable proteins.
It is a natural clay, but large-scale mining and processing can have environmental impacts. Its use in sealing landfills is considered beneficial for containment.
A type of absorbent clay formed from volcanic ash, composed primarily of montmorillonite.
Bentonite is usually technical / industrial in register.
Bentonite: in British English it is pronounced /ˈbɛntənʌɪt/, and in American English it is pronounced /ˈbɛntəˌnaɪt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of it as a BENch that TONes of water can sit on — it's a clay that absorbs and holds a ton of liquid.
Practice
Quiz
Bentonite is primarily composed of which mineral?