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Noun: picometer  'pee-kow,mee-tur
Usage: US (elsewhere: picometre)
  1. A metric unit of length equal to one trillionth of a meter
    - picometre [Brit, Cdn], micromicron

Derived forms: picometers

Type of: metric linear unit

Part of: A, angstrom, angstrom unit

Encyclopedia: Picometer