undissociated

American  

[uhn-di-soh-shee-ey-tid, -see-ey-] / 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 )

Example Sentences

See Examples For:

undissociated

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 Talbot, Henry P.

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

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 Talbot, Henry P.

The molecular concentration of such a solution, with the corresponding constants, depends on the total number of these particles, i.e. the sum of the ions and the undissociated neutral molecules.

From The Mechanism of Life by Leduc, Stéphane

In other cases, such as that of litmus, both the ion and the undissociated molecule are coloured, but in different ways.

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