Roofing Terms & Definitions. Asphalt: A bituminous waterproofing agent applied to roofing materials during manufacturing. Back Surfacing: Fine mineral matter applied to the backside of shingles to keep them from. sticking. Blisters: Bubbles that may appear on the surface of asphalt roofing after installation.
Symbol(noun) an abbreviation standing for the name of an element and consisting of the initial letter of the Latin or New Latin name, or sometimes of the initial letter with a following one; as, C for carbon, Na for sodium (Natrium), Fe for iron (Ferrum), Sn for tin (Stannum), Sb for antimony (Stibium), etc.
A symbol is an object or a concept that represents, stands for or suggests another idea, visual image, belief, action or material entity.Symbols take the form of words, sounds, gestures, ideas or visual images and are used to convey other ideas and beliefs.For example, a red octagon may be a symbol for STOP.n example of a symbol in this sense is Christ as a symbol of the archetype called self. For example, written languages are composed of a variety of different symbols that create words. Through these written words humans communicate with each other.