# Definition:CGS

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## 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:

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

## Also see

## Sources

- 1989: Ephraim J. Borowski and Jonathan M. Borwein:
*Dictionary of Mathematics*... (previous) ... (next): Entry:**cgs** - 2008: David Nelson:
*The Penguin Dictionary of Mathematics*(4th ed.) ... (previous) ... (next): Entry:**c.g.s. units**