centimetre
noun [ C ]
UK (US centimeter) uk/ˈsentɪˌmiːtər/ us( abbreviation cm) MEASURES
a unit of measurement of length in the metric system, equal to 0.01 metres or 0.3937 inches:
Bangkok is sinking at the rate of up to five centimetres (two inches) a year, and the entire city may be below sea level by 2050.
The newspaper has increased the amount it charges per square centimetre of advertising space by 16%.