| Noun | 1. | system of weights and measures - system of measurement for length and weight and duration system of measurement, metric - a system of related measures that facilitates the quantification of some particular characteristic British Imperial System, British system, English system - a system of weights and measures based on the foot and pound and second and pint metric system - a decimal system of weights and measures based on the meter and the kilogram and the second United States Customary System - the system of weights and measures based on the foot and pound and second and pint that dates back to colonial America but differs in some respects from the British Imperial System; today in the United States this system exists side by side with the SI system |