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colloidal

[ kuh-loid-l ]

adjective

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

    colloidal gold and silver.



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Other Words From

  • col·loi·dal·i·ty [kol-oi-, dal, -i-tee], noun
  • col·loidal·ly adverb
  • noncol·loidal adjective
  • semi·col·loidal adjective
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Word History and Origins

Origin of colloidal1

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

Scammers are peddling fake remedies ranging from colloidal silver to cow manure.

From Time

Graham considered "colloidal silicic acid a liquid miscible with water in all proportions."

Colloidal platinum in water is negative, in a mixture of water and alcohol, positive.

Colloidal preparations of platinum, silver and many other metals may be prepared in the same way.

Other varieties of heterogeneous colloidal mixtures are tabulated by Wo.

Thus, colloidal As2S3, carrying a negative charge, is precipitated by the positive ions of added electrolytes.

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colloidcolloidal suspension