colloid - Master This Word
Master this word with our 5-step learning method – Learn English in English
colloid Word Meanings
- a mixture where tiny particles are suspended in a liquid.
- a gel-like substance with dispersed particles.
- a medium with properties between a solution and a suspension.
colloid Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
colloid Phonetic & Pronunciation
UK
/ˈkɒl.ɔɪd/
US
/ˈkɑː.lɔɪd/
colloid Word Etymology
Colloid comes from the Greek 'kolla' (glue) and 'eidos' (form), meaning 'glue-like'. The term evolved through French before entering English. Imagine a sticky glue, representing how particles are held together in a colloid, like a group of dancers in a formation that can change yet stays united.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Colloid is a type of mixture in which tiny particles are dispersed throughout another substance, forming a stable, non-uniform system that is not quite a solution but also not a simple suspension. Common examples include milk, mayonnaise, fog, and gel-like substances such as gelatin. In colloids, the particles are small enough to remain suspended and scatter light (the Tyndall effect), yet large enough to stay dispersed rather than dissolve completely. Understanding colloids helps explain everyday textures—from creamy dressings to cloudy emulsions—and also underpins techniques in chemistry, medicine, and materials science that rely on controlled particle dispersion.
Usage Reminders
- Think of mixtures with tiny particles that stay dispersed, not dissolved.
- Distinguish colloid from solution and suspension.
- Use 'colloid' as a noun and 'colloidal' as an adjective.
- Include everyday examples like milk or fog to illustrate.
- Note the term when discussing light interaction (Tyndall effect).
- Avoid using 'colloidal solution' as a misnomer.
Common Misconceptions
- A colloid is the same as a solution.
- Colloids involve only liquids with large particles.
- All colloids are cloudy or opaque.
- Particles in a colloid are visible to the naked eye.
- Colloids dissolve completely in solvent.
Thinking Differences
Colloid is a technical term that emphasizes dispersion stability and particle size rather than complete dissolution; learners often mix it up with solutions or suspensions and may overgeneralize from simple mixtures.
Learning Tips
- Look for everyday examples to anchor the concept.
- Compare colloids with solutions and suspensions side by side.
- Learn the related adjective colloidal and its usage.
- Remember the light-scattering property is a giveaway feature.
- Practice distinguishing particle size ranges and dispersion stability.
- Read scientific context to see how scientists describe colloids.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the definition of 'colloid'?
A.A solid substance that has a definite shape.
B.A mixture where tiny particles are dispersed in a medium but do not settle out.
C.A type of gas that is highly pressurized.
D.A process of photosynthesis.
Step 2: Usage
Which sentence uses 'colloid' correctly?
A.The doctor prescribed a colloid for my cough.
B.The colloid of the pie tasted delicious.
C.Milk is an example of a colloid because it contains tiny fat particles suspended in water.
D.I need to colloid my homework by next week.
Step 3: Similar Words
Which word is most similar to 'colloid'?
A.Solution
B.Solid
C.Gas
D.Element
Step 4: Opposite Words
What is the opposite of 'colloid'?
A.Pure substance
B.Solution
C.Suspension
D.Mixture
Step 5: Mastery
Can you give an example of a real-life scenario of using a colloid?
A.When you bake a cake, all the ingredients blend together perfectly.
B.In the lab, scientists use colloids in various experiments to analyze their properties.
C.The air was filled with the sweet scent of fresh flowers.
D.When boiling water, the steam rises and fills the room.
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