the period of time when sb holds an important job （重要职务的）任期◆The company's share price trebled under his tenure as Chief Executive. 在他的总裁任期内，公司的股价涨了两倍。
() the right to stay permanently in your job, especially as a teacher at a university （尤指大学教师的）终生职位◆It's still extremely difficult to get tenure. 终生职位仍然很难获得。➡lifetime employment
() the legal right to live in a house or use a piece of land （房屋、土地的）保有权◆When you rent a house here, you don't have security of tenure. 在这里租房子没有租住权保障。