exposition

/ˌɛkspəˈzɪʃən/
noun
  1. A large public exhibition or show, often of art, products, or technology.
    • The technology exposition drew thousands of visitors eager to see the latest gadgets.
    • We visited an art exposition at the museum last weekend.
    • The world's fair was a huge exposition featuring inventions from dozens of countries.
  2. A detailed explanation or description of an idea, theory, or piece of writing.
    • Her essay begins with a thorough exposition of the historical context.
    • The professor gave a clear exposition of the theory of relativity.
    • The book's exposition of the author's philosophy is both accessible and deep.
  3. The part of a story or play that introduces the background, setting, and characters.
    • Good exposition provides just enough information without slowing down the plot.
    • In the first act, the exposition reveals that the hero is an orphan.
    • The movie's exposition felt rushed, leaving viewers confused about the characters' motives.