elective

名词 elective:

1. a course that the student can select from among alternatives
   同义词：elective course

形容词 elective:

1. subject to popular election
   同义词：elected
2. not compulsory

1. She is taking French as an elective next year.
   她明年选修法语。

e.lec.tive

adj.（形容词）
Of or relating to a selection by vote.
关于投票选举的
Filled or obtained by election:
由选举产生的或获得的：
例句：
elective office.
由选举产生的职位

Having the power or authority to elect; electoral.
有选举权的；选举人的
Permitting or involving a choice; optional:
随意的：允许或涉及选择的；随意的：
例句：
elective surgery.
非急需施行的手术

n.（名词）
An optional academic course or subject.
选修的科目：选修课程或课题

【引伸】
elec.tively
adv.（副词）
elec.tiveness
n.（名词）