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*noun:*- 10-15 of a metre. Expression: fm

- 10-15 of a metre. Representation: fm
- a metric product of size equal to one quadrillionth of a meter
- a metric device of length add up to one quadrillionth of a meter
- 10-15 of a metre. Symbol: fm
- a metric product of length add up to one quadrillionth of a meter
- 10-15 of a metre. Logo: fm
- a metric device of size corresponding to one quadrillionth of a meter
- 10-15 of a metre. Symbol: fm
- a metric device of size add up to one quadrillionth of a meter

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**Definition for "femtometre"**

**Sentence for "femtometre"**

**Hypernym for "femtometre"**

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