- not dissociated, especially into ions or into simpler molecules.
Origin of undissociated
1905–10; un-1 + dissociated
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for undissociated
In other cases, such as that of litmus, both the ion and the undissociated molecule are coloured, but in different ways.