exposure

n. denouncement; disclosure, revealing; exposing of film to light (Photography); photograph; abandoning; placement, location (in relation to the sun)

Exposure can refer toIn biology:A condition of poor health or death resulting from lack of protection over prolonged periods under weather, extreme temperatures or dangerous substances (see also: hypothermia, hyperthermia, radioactive contamination, radiation poisoning)Acute exposure, the exposure to a toxic substance during a short period of timePost-exposure prophylaxis, any treatment started immediately after exposure to a diseaseChildren's Environmental Exposure Research Study, an EPA study regarding children's exposure to pesticides and other chemicals in U.S. households
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(n.)
The state of being exposed or laid open or bare; openness to danger; accessibility to anything that may affect, especially detrimentally; as, exposure to observation, to cold, to inconvenience.
  

(n.)
The exposing of a sensitized plate to the action of light.
  

(n.)
The act of exposing or laying open, setting forth, laying bare of protection, depriving of care or concealment, or setting out to reprobation or contempt.
  

(n.)
Position as to points of compass, or to influences of climate, etc.
  

the process of allowing radiation to interact with some areas of a photoresist layer while blocking the radiation from reaching other areas of photoresist.

the condition of being subjected to a source of risk.