\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.                                --Shak.
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]