elective

Meanings

1. 1
   adj

   Not required; chosen freely.

   She decided to take an elective course in photography.

2. 2
   noun

   A course of study that you can choose rather than one that is required.

   I still need to decide which electives to take next semester.

3. 3
   adj

   Of medical treatment, planned in advance rather than for an emergency.

   The hospital postponed all elective surgery during the crisis.

From elect + -ive.

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