Ex`po*si"tion (?), n. [L. expositio, fr. exponere, expositum: cf. F. exposition. See Expound.] 1. The act of exposing or laying open; a setting out or displaying to public view.

2. The act of expounding or of laying open the sense or meaning of an author, or a passage; explanation; interpretation; the sense put upon a passage; a law, or the like, by an interpreter; hence, a work containing explanations or interpretations; a commentary.

You know the law; your exposition
Hath been most sound.

3. Situation or position with reference to direction of view or accessibility to influence of sun, wind, etc.; exposure; as, an easterly exposition; an exposition to the sun. [Obs.] Arbuthnot.

4. A public exhibition or show, as of industrial and artistic productions; as, the Paris Exposition of 1878. [A Gallicism]

• The action of putting something out to public view; for example in a display or show.
  
• The act of declaring or describing something through either speech or writing.
  
• The act of expulsion, or being expelled, from a place. now obsolete.
  
• An essay or speech in which any topic is discussed in detail.