noun ·4 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   An SI/MKS unit of measure, the length of ¹⁄₁₀₀₀ of a metre. Symbol: mm

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

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

Synonyms

All synonyms

;milmillmillimmillimetermillimeter

Example

More examples

"The exchange unfolding in front of my eyes had not a single millimetre of a gap in which for me to slip."

Etymology

From French millimètre, equivalent to milli- + metre.

Related phrases

cubic millimetremillimetre of mercury

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