antifog

antifog

(ˌæntɪˈfɒɡ) or

antifogging

adjacting to prevent the condensation of moisture, esp on transparent surfaces

an•ti•fog

(ˌæn tiˈfɒg, -ˈfɔg, ˌæn taɪ-)

adj. preventing or resisting the buildup of moisture on a surface: an antifog fluid for camera lenses.