Micrometer

//maɪˈkɹɑmɪtəɹ// noun

Definitions

Noun
  1. 1
    A device used to measure distance very precisely but within a limited range, especially depth, thickness, and diameter.
  2. 2
    US spelling of micrometre (“one-millionth of a metre”). US, alt-of
  3. 3
    caliper for measuring small distances wordnet
  4. 4
    a metric unit of length equal to one millionth of a meter wordnet

Etymology

Etymology 1

From French micromètre.

Etymology 2

From micro- (“one millionth”) + meter.

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