High blood cholesterol levels can cause hardening of the arteries at a younger age. For many people, high cholesterol levels are the result of an unhealthy lifestyle -- most commonly, eating a diet that is high in fat. Other risk factors are heavy alcohol use, lack of exercise, and being overweight.
Freebase(0.00 / 0 votes)Rate this definition: Comparator. In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as analog-to-digital converters.
Use comparator in a sentence. 1  any of various instruments, esp. in electronics, for comparing some measurement, as of length, brightness, or voltage, with a fixed standard. 2  Any of various instruments for comparing a measured property of an object, such as its shape, color, or brightness, with a standard.