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Noun: femtometre
Usage: Brit, Cdn (US: femtometer)
  1. A metric unit of length equal to one quadrillionth of a meter
    - femtometer [US], fermi

Derived forms: femtometres

Type of: metric linear unit

Part of: micromicron, picometer [US], picometre [Brit, Cdn]

Encyclopedia: Femtometre