10 mm berapa cmCentimeter Definition. Centimeter is considered a common unit of length used in SI. It is equivalent to 10 millimeters or 1100 th (10-2) of a meter.Years ago it was a basic unit inCentimeter. 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 1100 meters. Historyorin: A