See Also: isoionic(dictionary)
isoionic point(medicine)

isoionic (iou)



isoionic adjective. E20.
[from ISO- + IONIC adjective2.]
Chemistry. Of a solute or solution: giving rise to or containing no non-colloidal ions other than those formed by dissociation of the solvent.
isoionic point the point (usu. pH value) at which the average number of protons attached to the basic groups of solute molecules is equal to the average number dissociated from the acidic groups.