TENURE

[noun] [U] [formal] - the legal possession of land, a job or an official public position, or the period of time during which you possess itThey have bought the house with a 999-year lease which gives them security of tenure.During his tenure as dean, he had a real influence on the students.(formal) If you have tenure in your job, your job is permanent.She is one of the few lecturers in this department who have tenure.