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.
We could put a stick to the dirt and drag it around and make a circle that represented our world, our universe. All of our understanding of the meaning of the circle symbol stems from that one moment of looking out from the eyes of the first human. The circle symbol meaning is universal - it represents the infinite nature of energy and the symbol of the universe. The Circle Christian Symbol represents eternity. The circle symbolizes eternity as it has no beginning or end. Because of this many early Christians believed that there was something divine in circles.