Centimeter. Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current form of the metric system. It is defined as 1/100 meters. History/origin: A …

Centimeter (cm) or centimetre is a unit of length in the International System of Units (SI). Centi is a prefix for 1/100. One centimeter is equal to 1/100 of a meter (m). One centimeter is equal to …