| Each antimatter atom has antielectrons, antiprotons, and antineutrons, except the antiatom of ordinary hydrogen which has no antineutron. |
| Also we can define a mesonic antiatom as an ordinary antiatomic nucleous with one or more of its antielectrons replaced by positively-charged mesons. |
| Also we can define a mesonic antiatom as an ordinary antiatomic nucleons with one or more of its antielectrons replaced by positively-charged mesons. |
