Metric vent plugs. See examples of metric used in a sentence. METRIC definition: pertaining to the meter or to the metric system. Although there have been many different measurements and the definitions of the units have been revised, the official system of measurements of most countries is the modern form of the metric system which is known as the "International System of Units". The metric system is a system of measuring. . Feb 25, 2026 · metric system, international decimal system of weights and measures, based on the metre for length and the kilogram for mass, that was adopted in France in 1795 and is now used officially in almost all countries. The metric system is a system of measurement that standardises a set of base units and a nomenclature for describing relatively large and small quantities using decimal -based multiplicative unit prefixes. The metric system was invented in France in the years following the French Revolution, and a version of it is now used in most of the world to measure distance, weight, and volume. Explore and learn more about metric systems with definition, conversions, and examples. The metric system is a system of measurement that standardises a set of base units and a nomenclature for describing relatively large and small quantities using decimal -based multiplicative unit prefixes. It has three main units: The length of this guitar is about 1 meter: The metric system of measurement is the standard way of measuring distance, calculating height, and most of the other day-to-day items. nmve iypdn lxopx jmrzy luzj clio gsrfwr hnss bttyd ozcjkju