Micrometre

//ˈmaɪkɹəˌmiːtə(ɹ)// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An SI and mks unit of measure, the length of one-millionth of a metre. Symbol: μm, um, μ.

    "Holonyms: millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre"

  2. 2
    a metric unit of length equal to one millionth of a meter wordnet

Synonyms

All synonyms
micronmicrometermicron

Example

More examples

"Holonyms: millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre"

Etymology

From micro- + metre.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.