The term DIV. TIME is an abbreviation for 'Division of Time'. It is a way of measuring time in smaller increments than the traditional hour, minute, and second. The most common divisions of time are milliseconds (MSEC, 4 letters), minutes (MIN, 3 letters), and seconds (SEG, 3 letters). These divisions of time are used to measure short periods of time, such as reaction times or the speed of a computer processor.