ଅର୍ଥ : Something that serves as a preceding event or introduces what follows.
ଉଦାହରଣ :
Training is a necessary preliminary to employment.
Drinks were the overture to dinner.
ସମକକ୍ଷ : overture, preliminary
ଅର୍ଥ : Music that precedes a fugue or introduces an act in an opera.