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colloidal

American  
[kuh-loid-l] / kəˈlɔɪd l /

adjective

Physical Chemistry.
  1. pertaining to or of the nature of a colloid.

    colloidal gold and silver.


colloidal British  
/ ˌkɒˈlɔɪdəl, ˌkɒlɔɪˈdælɪtɪ /

adjective

  1. of, denoting, or having the character of a colloid

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of colloidal

First recorded in 1860–65; colloid + -al 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The researchers introduced light sensitive molecules known as photoacids into a liquid containing colloidal particles.

From Science Daily • Mar. 2, 2026

Light programmable colloidal crystals may eventually enable reconfigurable optical coatings, adaptive sensors, and next generation display and data storage technologies, where patterns and functions are defined dynamically by illumination rather than fixed during manufacturing.

From Science Daily • Mar. 2, 2026

They can determine where crystallization occurs, reshape and "sculpt" the structures, and enhance their uniformity and size to create larger and more intricate colloidal assemblies.

From Science Daily • Mar. 2, 2026

They even sold bottles of their own colloidal silver online, which they touted as a “cure-all” substance and one of the “most healing” medicines on the planet that can boost the body’s immune system.

From Salon • Jan. 7, 2024

Like albumin this precipitate forms flakes, and is deposited slowly as a gelatinous colloidal mass.

From The Mechanism of Life by Leduc, Stéphane

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