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

It is evident that the undissociated part of each acid must eventually be in equilibrium with the free hydrogen ions, and, if the concentrations are not such as to secure this condition, readjustment must occur.

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

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

The yellow color which it imparts to solutions is ascribed to the presence of the undissociated base.

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

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

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