CC stands for cubic centimeters, which is a metric measurement of engine capacity. It refers to the amount of air and fuel that can be pushed through the cylinders in the engine. The size of a cars engine is measured in CC, and it is calculated by measuring the diameter of the cylinder. In most cases, the general rule of thumb is that the bigger the capacity, the more powerful it tends to be. However, there are exceptions, especially with many small engines having turbochargers these days, which has the effect of increasing efficiency and power. CC is a common term used when talking about vehicles, and it is used to calculate the size of the engine.