# Definition:CGS

## Definition

**CGS** is the centimetre-gram-second standard system of units of measurement.

This system is rarely used nowadays, the SI units having largely taken over.

## CGS Base Units

Name | Unit symbol | Dimension | Symbol |
---|---|---|---|

centimetre | $\mathrm{cm}$ | Length | $l$ |

gram | $\mathrm g$ | Mass | $m$ |

second | $\mathrm s$ | Time | $t$ |

## CGS Derived Units

### Dyne

The **dyne** is the CGS unit of force:

- $1 \ \mathrm{dyn} = 1 \ \mathrm g \ \mathrm{cm} \ \mathrm s^{-2}$