1. A metric unit of length equal to one billionth of a meter
   - nanometre [Brit, Cdn], nm, millimicron, micromillimeter [US], micromillimetre [Brit, Cdn]

Derived forms: nanometers

Type of: metric linear unit

Part of: micrometer [US], micrometre [Brit, Cdn], micron

Encyclopedia: Nanometer

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