The term 'Visibility Helper' is a job description for a Defogger, which is an 8-letter word. A Defogger is a person who helps to improve visibility in a variety of situations. They may be employed in a variety of industries, such as aviation, transportation, and construction, to ensure that the environment is safe and clear for workers and customers. They may also be employed in the military to help soldiers see better in foggy or misty conditions. In addition, they may be employed in the medical field to help doctors and nurses see better during surgeries. Defoggers are essential in many industries to ensure safety and visibility.