elec·tive /ɪˈlɛktɪv/ 形容詞
E·lect·ive, n. In an American college, an optional study or course of study; a course that is not required. [Colloq.]
1. Exerting the power of choice; selecting; as, an elective act.
2. Pertaining to, or consisting in, choice, or right of choosing; electoral.
The independent use of their elective franchise. --Bancroft.
3. Bestowed or passing by election; as, an elective office.
Kings of Rome were at first elective; . . . for such are the conditions of an elective kingdom. --Dryden.
4. Dependent on choice; that can be refused; as, an elective college course. Opposite of required or mandatory.
Elective affinity or Elective attraction Chem., a tendency to unite with certain things; chemism.
adj 1: subject to popular election; "elective official" [syn: elected]
2: not compulsory; "elective surgery"; "an elective course of