femtometer

noun

fem·to·me·ter | \ ˈfem(p)-tə-ˌmē-tər

How to pronounce femtometer (audio)

, -tō-\

Definition of femtometer

: a unit of length equal to 10⁻¹⁵ meters : one quadrillionth of a meter

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Dictionary Entries near femtometer

femorotibial index

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The first known use of femtometer was in 1971

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