The term 'Type of Professor' can refer to two different types of professors: ADJUNCT and EMERITUS. An ADJUNCT professor is a professor who is hired on a temporary basis, usually to teach one or two courses per semester. They are often part-time faculty members who are not eligible for tenure. An EMERITUS professor is a professor who has retired from teaching but still holds the title of professor. They are usually given this title in recognition of their long-term service and contributions to the university.