Medical Dictionary
isoionic point
noun iso·ion·ic point \ˌī-sō-ī-ˈän-ik-\
Medical Definition of ISOIONIC POINT
: the hydrogen-ion concentration expressed usually as the pH value at which the ionization of an amphoteric substance as an acid equals the ionization as a base and becomes identical with the isoelectric point in the absence of foreign inorganic ions
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