Definition of: overture

(ō′vər·chər) noun
1. Music a An instrumental prelude, as to an opera or other large work. b An orchestral piece of varying form, usually illustrating a dramatic or graphic theme.
2. A proposal intended to lead to further negotiations by expressing willingness to make terms; also, the proposal submitted. See synonyms under PROPOSAL.
—v.t. ·tured, ·tur·ing
1. To offer as an overture or proposal.
2. To introduce with or as an overture. [<OF <ouvert. See OVERT.]