Coal in Australia. Right now, coal is Australiaâs primary fuel source for generating electricity at around 73 percent. Black coal is found across Australia. Brown coal, sometimes called lignite, is a relatively soft material, which has a heating value of about one-quarter of black coal.
noun. The definition of abrasive is something that is harsh or rough, often to an unpleasant degree. An example of abrasive is the attitude of your boss who is always short tempered and yelling at you. Sand paper or SOS pads are examples of abrasives.
sandâ¢paâ¢per. 1. strong paper coated with a layer of sand or other abrasive, used for smoothing or polishing. 2. to smooth or polish with sandpaper.oun. 1. sandpaper-stiff paper coated with powdered emery or sand. emery paper. emery-a hard grey-black mineral consisting of corundum and either hematite or magnetite; used as an abrasive (especially as a coating on paper). abradant, abrasive, abrasive material-a substance that abrades or wears down.