Elective a. : Exerting the power of choice; selecting; as, an elective act.

Elective a. : Pertaining to, or consisting in, choice, or right of choosing; electoral.

Elective a. : Dependent on choice; bestowed or passing by election; as, an elective study; an elective office.

Elective n. : In an American college, an optional study or course of study.

Example:
What's the difference between Elective and clubs?

Taxonomy
Elective, elective courses, free encyclopedia, merger, student, core courses, deletion, search, consensus, promptly, adjective, by election, optional subject, curriculum, courses, academic degree, home medical school, Motivations.

Defination from the web:
Elective is a term used for an academic course chosen by the student from a set of options, as opposed to a required course. ... The term elective is also used for a period of medical study conducted away from the student's home medical school, often abroad. ...