undissociated

American  

[uhn-di-soh-shee-ay-tid, -see-ay-] / ˌʌn dɪˈsoʊ ʃiˌeɪ tɪd, -siˌeɪ- /

adjective

Chemistry.

1. not dissociated, especially into ions or into simpler molecules.

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Etymology

Origin of undissociated

First recorded in 1905–10; un- ¹ + dissociate ( def. ) + -ed ² ( def. ); dissociation ( def. 3 )

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Example Sentences

See Examples For:

undissociated

Solid copper chloride is brown or yellow, so that its concentrated solution, which contains both ions and undissociated molecules, is green, but changes to blue as water is added and the ionization becomes complete.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" by Various

In other words, there is always a definite and constant ratio between the product of the concentrations of the ions and the concentration of the undissociated acid when conditions of equilibrium prevail.

From An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes by Henry P. Talbot

But since water is almost entirely undissociated, equilibrium can only be reached when there are very few hydroxyl or hydrogen ions present.

From An Elementary Study of Chemistry by William McPherson

The result of this equilibrium is that quite a number of H+ ions from the water are converted into undissociated HCN molecules.

From An Elementary Study of Chemistry by William McPherson

For instance, the colour of a salt solution is the colour obtained by the superposition of the colours of the ions and the colour of any undissociated salt that may be present.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" by Various

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