elective

1. ADJ An elective post or committee is one to which people are appointed as a result of winning an election. 选任的[正式] [usu ADJ n]

Buchanan has never held elective office. 布坎南从未担任过选任职位。

2. ADJ Elective surgery is surgery that you choose to have before it becomes essential. (手术)选择性的[正式] [usu ADJ n]

3. N-COUNT An elective is a subject that a student can choose to study as part of his or her course. 选修课程[美国英语]