Polyelectrolyte composed of macromolecules containing both cationic and anionic groups, or corresponding
ionizable groups.
Note:
An ampholytic polymer in which ionic groups of opposite sign are incorporated into
the same pendant groups is called, depending on the structure of the pendant groups,
a zwitterionic polymer, polymeric inner salt, or polybetaine.
Source:
PAC, 2006, 78, 2067
(Terminology of polymers containing ionizable or ionic groups and of polymers containing
ions (IUPAC Recommendations 2006))
on page 2068