nonmatriculated
adjective
non·ma·tric·u·lat·ed ˌnän-mə-ˈtri-kyə-ˌlā-təd 
: not fully enrolled as a member of a college or university : not matriculated
nonmatriculated students who are not eligible for a degree
In the summer term of 1937, enrollment reached an all-time high with fifty-eight full-time matriculated and eighty-three nonmatriculated (part-time) students.
Herbert Arthur Strauss
Herbert Arthur Strauss
Word History
First Known Use
1793, in the meaning defined above