Millimicron

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A unit of length equal to one thousandth of a micron.
  2. 2
    a metric unit of length equal to one billionth of a meter wordnet

Synonyms

All synonyms
nanometernanometremicromillimetermicromillimetrenanometernanometre

Etymology

From milli- + micron.

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