The act or an instance of exposing, as: An act of subjecting or an instance of being subjected to an action or an influence: their first exposure to big city life. Appearance in public or in the mass media: an actor with much recent exposure in television. Revelation, especially of crime or guilt: exposure of graft in county government. The act of presenting a body part, especially the genitals, to view: indecent exposure. The condition of being exposed, especially to severe weather or other forces of nature: was hospitalized for the effects of exposure. A position in relation to climatic or weather conditions or points of the compass: Our house has a southern exposure. The act of exposing sensitized photographic film or plate. A photographic plate or a piece of film so exposed. The amount of radiant energy needed to expose a photographic film.