2. Music. a. an orchestral composition forming the prelude or introduction to an opera, oratorio, etc.
b. an independent piece of similar character.
3. an introductory part, as of a poem; prelude; prologue.
4. (in Presbyterian churches) a. the action of an ecclesiastical court in submitting a question or proposal to presbyteries.
b. the proposal or question so submitted.
5. to submit as an overture or proposal: to overture conditions for a ceasefire.
6. to make an overture or proposal to: to overture one's adversary through a neutral party.