The crossword solution for the term GREEN COATING is DEW, which is an acronym for Dichroic-Enhanced-Weathering. This type of coating is used to protect surfaces from the effects of weathering, such as UV radiation, acid rain, and salt spray. It is a special type of paint that has a green hue and is designed to reflect light in order to reduce heat absorption. The coating also helps to prevent corrosion and fading of the surface it is applied to.