also: かくいん
noun
guest member; associate member; honorary member
Refers to a non-regular member of an organization, such as a visiting professor, guest researcher, or honorary board member. Often used in academic, corporate, or institutional contexts.
彼は大学の客員教授として招かれた。
He was invited as a visiting professor at the university.
研
I stayed for one year as a guest researcher at the research institute.