[EPA, Terms & Acronyms Glossary]:a common name for a fungus that leaves a thin white coating on the surface of plants and other materials where it grows. [USDA National Agricultural Library Glossary][ISO 7482-1:1998, 3.3.3.6]:visible development of saprophytic fungus on the flesh side of the skin, promoted by prolonged storage in too humid an atmosphere ; it can also result in an alteration in the grain on the tanned skin.