montmorillonite: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “montmorillonite” mean?
A soft, pale-coloured clay mineral with high swelling and water-absorption capacity.
Audio
Pronunciation
Definition
Meaning and Definition
A soft, pale-coloured clay mineral with high swelling and water-absorption capacity.
A type of phyllosilicate clay mineral belonging to the smectite group, characterized by its ability to expand significantly when wet. It is used in various industrial applications, including drilling muds, cat litter, and as an additive in ceramics and cosmetics.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is identical.
Connotations
None beyond its technical definition.
Frequency
Equally rare in both dialects, confined to specialist fields.
Grammar
How to Use “montmorillonite” in a Sentence
The [material] contains montmorillonite.Montmorillonite is used as a [additive/agent] in [application].The [property] of montmorillonite was studied.Vocabulary
Collocations
Examples
Examples of “montmorillonite” in a Sentence
adjective
British English
- The montmorillonitic soils exhibited significant shrink-swell behaviour.
American English
- The montmorillonitic fraction of the sediment was analyzed.
Usage
Meaning in Context
Business
Rare, except in specific industries like petrochemicals (drilling fluids) or consumer goods (cat litter manufacturing).
Academic
Common in geology, soil science, environmental engineering, and materials science journals and textbooks.
Everyday
Virtually never used.
Technical
The primary register. Used precisely to describe the specific mineral's properties and applications.
Vocabulary
Synonyms of “montmorillonite”
Neutral
Weak
Watch out
Common Mistakes When Using “montmorillonite”
- Misspelling: 'montmorillonate', 'montmorillite', 'montmorillonit'.
- Mispronunciation: Stressing the first syllable ('MONT-') instead of the third ('-RIL-').
- Using it as a general term for any clay.
FAQ
Frequently Asked Questions
Its most common uses are as a key component in drilling mud for oil wells, as the active clumping agent in cat litter, and as a binder in foundry sands.
Not exactly. Bentonite is a rock which is largely composed of montmorillonite. Bentonite is the industrial name, while montmorillonite is the specific mineralogical name.
It has a layered structure where water molecules can easily enter between the layers, causing them to expand or 'swell' significantly.
Yes, though you wouldn't know it by name. It's the main ingredient in most clumping cat litters and is sometimes used in cosmetics like facial mud masks.
A soft, pale-coloured clay mineral with high swelling and water-absorption capacity.
Montmorillonite is usually technical/scientific in register.
Montmorillonite: in British English it is pronounced /ˌmɒntməˈrɪlənaɪt/, and in American English it is pronounced /ˌmɑːntməˈrɪlənaɪt/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine a MORILLON (a type of grape) growing on a MONT (mountain) made of soft, expanding clay. 'Mont-morillon-ite' is the mineral from that clay mountain.
Conceptual Metaphor
N/A. The term is a technical label without common metaphorical extensions.
Practice
Quiz
Montmorillonite is primarily classified as what type of mineral?