The phrase "exposure period" refers to a specific amount of time during which a person or thing is brought into contact with something or someone, often in order to examine, assess, or become familiar with it. Full definition
Buyers and agents become aware of the long exposure period and often are hesitant to make an offer because they fear something is wrong with the property. (housebeautifulnj.com)
Researchers also need to ascertain where people were during the peak exposure period and where they obtained food and drinking water. (science.sciencemag.org)
After a 24 - h exposure period, eggs laid on the surface of the water in the test and control cups (see Fig. 2 a) were counted. (pnas.org)