IPA: /sɪˈlɛktər/
KK: /sɪˈlɛktər/
A person or thing that chooses or picks something from a group.
The selector for the music playlist chose the best songs for the party.
Selector → It is formed from "select" (from Latin "selectus", meaning chosen) and "-or" (meaning one who). The word "selector" refers to one who chooses or picks out from a group.
Think of someone who is 'choosing' ('select') something — the '-or' indicates that this person is the one doing the choosing.