Presumably, many friends often see the word cm when surfing the Internet, especially when calculating the size of items. Many friends don't know what cm means, so what does cm mean?

What does cm mean? 1, cm is the unit of length measurement, translated in Chinese as cm, 1cm= 10mm (mm), 10cm= 1dm (decimeter), which is the most basic unit of length measurement. Anything shorter is in centimeters.

2.cm is a concept that everyone came into contact with in primary school. Usually in mathematics. There are many problems in calculating the length of things, and cm is needed at this time.

3. Besides centimeters, commonly used units of length measurement are millimeters (centimeters), decimeters (decimeters), meters (meters) and kilometers (kilometers). In general, people will automatically choose the appropriate length unit according to the length of things.

This is the whole meaning of cm.