0 used to refer to a teacher in a college or university who does not have tenure (= the right to remain permanently in a job):
Untenured faculty members (assistant professors and associate professors without tenure) have three year renewable contracts.
It is to reduce drastically the number of untenured posts.
In addition, untenured researchers know that, when they seek promotion and tenure, it is likely that some of the evaluators will lack commitment to interdisciplinarity.
Shackleford was an untenured professor when he began the blog.
A month later the district's superintendent made his annual recommendations to the board on whether to renew the contracts of untenured faculty.