millimeter

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Canada, US/ˈmɪləˌmitɚ/Canada, US[ˈmɪləˌmiɾɚ]

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

Similar
millimetremm
OriginFrench millimètre →
Less commonScrabble 14
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Meanings

nounmillimeter (plural millimeters)

plural millimeters

  1. USUS spelling of millimetre.

Synonyms & antonyms

nouna metric unit of length equal to one thousandth of a meter

Similar
millimetremm
Broader
metric linear unit
Also see
mike-mikemillimetremm

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Frenchmillimètre
  2. Englishmillimeter

From French millimètre, as if milli- + meter.

More words from French

Full word history & related roots →

Rhymes & wordplay

Anagrams

millimetre
Cite this entry
APA

millimeter. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/millimeter

MLA

“millimeter.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/millimeter. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “millimeter,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/millimeter.

Source: millimeter on Wiktionary, CC BY-SA 4.0.