noun
alumnus
uh-LUM-nuhs/əˈlʌmnəs/
A former student or member of an institution or program.
The alumnus returns to his former university carrying an old class photograph.

Etymology
Alumnus meant a pupil, literally a foster son, and came from a verb meaning “nourish.” Its school sense carries the image of students being nurtured by an institution.
In context
if you graduated from Yale College the University of Chicago You're an alumnus of the University that's the difference
More examples
- The school invites its alumni to an annual reunion.
- He remains an active alumnus of the summer workshop.
- Several distinguished alumni speak at the ceremony.
Forms
alumnus · alumni