exposer

transitive verb exposed, exposing

1. 1. to lay open (to danger, attack, ridicule, etc.); leave unprotected
   2. to make accessible or subject (to an influence or action)
2. to put or leave out in an unprotected place; abandon: some ancient peoples exposed unwanted infants
3. to allow to be seen; disclose; reveal; exhibit; display
4. 1. to make (a crime, fraud, etc.) known; unmask
   2. to make known the crimes, etc. of
5. Photog. to subject (a sensitized film or plate) to radiation having a photochemical effect