exposition
//ˌɛkspəˈzɪʃən//
Noun
expositionSingular
expositionsPlural
1
A comprehensive description and explanation of an idea or theory.
The professor gave a clear exposition of the economic theory.
2
A large public exhibition of art or trade goods.
The world exposition attracted millions of visitors from around the globe.
3
The part of a play, novel, or other work in which background information is conveyed.
The exposition in the first chapter introduces the main characters and setting.