colloidal suspension: meaning, definition, pronunciation and examples
C1+Technical/Academic
Quick answer
What does “colloidal suspension” mean?
A mixture where tiny, insoluble particles (the colloid) are evenly dispersed throughout a continuous medium (the liquid), without dissolving.
Audio
Pronunciation
Definition
Meaning and Definition
A mixture where tiny, insoluble particles (the colloid) are evenly dispersed throughout a continuous medium (the liquid), without dissolving.
A state of matter intermediate between a true solution and a suspension, with particles typically 1–1000 nanometres in size. The particles are small enough to remain dispersed and not settle out quickly, but large enough to scatter light (Tyndall effect).
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage, spelling, or meaning.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally infrequent outside scientific/technical contexts in both varieties.
Grammar
How to Use “colloidal suspension” in a Sentence
The X forms a colloidal suspension in Y.A colloidal suspension of X in Y is prepared.X is dispersed as a colloidal suspension.Vocabulary
Collocations
Examples
Examples of “colloidal suspension” in a Sentence
verb
British English
- The nanoparticles were colloidalised to form a stable suspension.
- The mixture will not readily colloidalise without a dispersing agent.
American English
- The nanoparticles were colloidally suspended for the experiment.
- We need to colloidalize the precipitate.
adverb
British English
- The particles were colloidally dispersed throughout the medium.
- The sample was prepared colloidally stable.
American English
- The material is colloidally suspended in the fluid.
- The mixture behaves colloidally.
adjective
British English
- The colloidal suspension exhibited a pronounced Tyndall effect.
- Colloidal silver is sold as a health supplement.
American English
- The colloidal suspension showed strong light scattering.
- They studied colloidal gold particles.
Usage
Meaning in Context
Business
Rare. Might appear in R&D, pharmaceuticals, or materials science sectors.
Academic
Common in chemistry, physics, materials science, pharmacy, and chemical engineering texts and lectures.
Everyday
Virtually never used.
Technical
The primary domain. Used to describe paints, inks, milk, blood, and many industrial and natural mixtures.
Vocabulary
Synonyms of “colloidal suspension”
Strong
Neutral
Weak
Vocabulary
Antonyms of “colloidal suspension”
Watch out
Common Mistakes When Using “colloidal suspension”
- Pronouncing 'colloidal' as /ˈkɒl.ɔɪ.dəl/ (stress on first syllable). Correct is /kəˌlɔɪ.dəl/.
- Using interchangeably with 'solution'.
- Misspelling as 'coloidal' or 'colloidial'.
FAQ
Frequently Asked Questions
No. In a true solution, particles are individual molecules or ions and are dissolved. In a colloidal suspension, particles are clusters of many molecules and are not dissolved, merely dispersed.
Milk (fat globules in water), fog (water droplets in air), paint (pigment particles in liquid), and blood (cells and proteins in plasma) are all colloidal suspensions.
They are small enough to be kept in motion by random collisions with molecules of the dispersing medium (Brownian motion), and often they carry an electric charge that causes them to repel each other.
'Colloid' is the broader category describing the state of subdivision. A 'colloidal suspension' is a specific type of colloid where solid particles are dispersed in a liquid. Other colloids include aerosols (liquid in gas) and gels.
A mixture where tiny, insoluble particles (the colloid) are evenly dispersed throughout a continuous medium (the liquid), without dissolving.
Colloidal suspension is usually technical/academic in register.
Colloidal suspension: in British English it is pronounced /kəˌlɔɪ.dəl səˈspen.ʃən/, and in American English it is pronounced /kəˌlɔɪ.dəl səˈspen.ʃən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “(None directly; the term is purely technical)”
Learning
Memory Aids
Mnemonic
Think of 'colloid' like 'glue' (from Greek 'kolla') – the particles are 'stuck' in the liquid, not dissolved. A 'suspension' suspends them. Imagine tiny, invisible grains of sand perpetually floating in water.
Conceptual Metaphor
A crowd of tiny dancers (particles) perpetually moving in a ballroom (liquid), never sitting down (settling).
Practice
Quiz
Which of the following is a key identifying feature of a colloidal suspension?