noun

1. an exposing or being exposed; specif., a being exposed to harsh weather conditions without protection
2. a location, as of a house, in relation to the sun, winds, etc. an eastern exposure
3. appearance, esp. frequent appearance, before the public, as in the theater, on radio and TV, etc.
4. Photog.
   1. the subjection of a sensitized film or plate to the action of light rays, X-rays, etc.
   2. a sensitized surface or section of a film for making one picture
   3. the time during which such a surface or film is exposed

Etymology: expos(e) + -ure