# centimeter

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## centimeter

(sĕn`tĭmē'tər), abbr. cm, unit of length equal to 0.01 metermeter,
abbr. m, fundamental unit of length in the metric system. The meter was originally defined as 1/10,000,000 of the distance between the equator and either pole; however, the original survey was inaccurate and the meter was later defined simply as the distance between two
, the basic unit of length in the metric systemmetric system,
system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the world.
. The centimeter is the unit of length in the cgs systemcgs system,
system of units of measurement based on the metric system and having the centimeter of length, the gram of mass, and the second of time as its fundamental units. Other cgs units are the dyne of force and the erg of work or energy.
. It is approximately equal to 0.39 inch, or 1 inch equals about 2.54 centimeters. See weights and measuresweights and measures,
units and standards for expressing the amount of some quantity, such as length, capacity, or weight; the science of measurement standards and methods is known as metrology.

Crude systems of weights and measures probably date from prehistoric times.
.

## centimeter

[′sent·ə‚mēd·ər]
(mechanics)
A unit of length equal to 0.01 meter. Abbreviated cm.

## centimeter

In the metric system, a measure of length equal to a hundredth part of a meter, or 0.3937+ in.; abbreviated cm; an inch equals 2.54 cm.

## centimetre

(US), centimeter
one hundredth of a metre

## centimeter

A unit of measurement that is 1/100th of a meter or approximately 4/10ths of an inch (0.39 inch).
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