little or no dissipation

Little or no dissipation means that energy within a system, such as electrical, mechanical, or thermal energy, is not significantly lost as heat or other forms during operation. In such systems, most of the input energy remains available for useful work, making them highly efficient. For example, in a near-lossless electrical circuit, electricity flows with minimal resistance, so very little energy is converted into heat. This concept is important in designing devices that aim to preserve energy, reduce waste, and operate effectively over time.