Stands for “U.S. Green Building Council.” A membership-based non-profit organization that promotes sustainability in how buildings are designed, built, and operated. USGBC is best known for its development of the Leadership in Energy and Environmental Design (LEED) green building rating systems and its annual Greenbuild International Conference and Expo

Stands for “Ultraviolet.” Indicates the wavelength of light emitted from the sun which, if exposed in excess, can be harmful to people and animals.