IPA: /kəˈliːdʒən/
KK: /kəˈliːdʒən/
A person who is a student at a college or has recently graduated from one.
As a collegian, she was involved in many campus activities and organizations.
Collegian → It is formed from "collegium" (from Latin, meaning a society or group) and the suffix "-an" (meaning belonging to or relating to). A collegian is someone who belongs to or is associated with a college or university.
Think of a 'society' ('collegium') that someone 'belongs to' ('-an') — that's why a collegian is someone who is part of a college.