Meaning femto
What does femto mean? Here you find 2 meanings of the word femto. You can also add a definition of femto yourself
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femtoPrefix used in the SI system meaning "multiply by 10-15". For example 22 fg means 22× 10-15 g.
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femto(f). One quadrillionth or 10-15, as in femtosecond, femtojoule, femtometer.
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