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Noun: micrometer  mI'krómitur or 'mIkro`meetu(r)
  1. [US] A metric unit of length equal to one millionth of a meter
    - micron, micrometre [Brit, Cdn]
     
  2. Caliper for measuring small distances
    - micrometer gauge, micrometer caliper

Derived forms: micrometers

Type of: caliper, calliper, metric linear unit

Part of: millimeter [US], millimetre [Brit, Cdn], mm

Encyclopedia: Micrometer