The term HIGH-TECH TIME MEAS. can be summarized as a measurement of time using high-tech methods. MSEC, which is an abbreviation for millisecond, is a unit of time equal to one thousandth of a second. High-tech time measurements are used in many fields, such as engineering, physics, and astronomy, to measure very small intervals of time. In addition, high-tech time measurements are used in the computer industry to measure the speed of processors and other components.