overture
ˈəʊvətj(ʊ)ə/
noun
noun: overture; plural noun: overtures
- 1.an orchestral piece at the beginning of an opera, play, etc.
"the overture to Mozart's ‘Don Giovanni’"
synonyms: prelude, introduction, opening, introductory movement, voluntary;
- an independent orchestral composition in one movement.
"Tchaikovsky's ‘1812 Overture’"
- 2.an introduction to something more substantial.
"the talks were no more than an overture to a long debate"
synonyms: preliminary, prelude, curtain-raiser, introduction, lead-in, precursor, forerunner, harbinger, herald, start, beginning;
- 3.an approach or proposal made to someone with the aim of opening negotiations or establishing a relationship.
"he began making overtures to British merchant banks"
synonyms: opening move, conciliatory move, move, approach, advances, feeler, signal, proposal, proposition, pass, offer, tender, suggestion
"the enemy were making peace overtures"
Origin
late Middle English (in the sense ‘aperture’): from Old French, from Latin apertura ‘aperture’.
'Google definition'