Word.ws English Dictionary

millimeter

/ˈmɪləˌmitɚ/

millimeter is the US spelling of millimetre.

Meaning of millimetre

Noun

millimetre (plural millimetres)

  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
    Synonyms:
    mil, mill, mike-mike

Forms of millimeter

pluralmillimeters

Origin of millimeter

From French millimètre, as if milli- + meter.

Words formed from millimeter

Phrases with millimeter

Questions about millimeter

What is millimeter the US spelling of?
Millimeter is the US spelling of millimetre.
How do you pronounce millimeter?
Millimeter is pronounced /ˈmɪləˌmitɚ/ (US).

Words near millimeter in the dictionary

  1. millimagnitudes
  2. Milliman
  3. Millimans
  4. millime
  5. millimes
  6. millimeter
  7. millimeter of mercury
  8. millimeters
  9. millimeters of mercury
  10. millimetre
  11. millimetre of mercury

Source and license

Adapted from Wiktionary: millimeter (page history and authors); millimetre (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-millimetre.ogg.

Cite this entry: “millimeter.” Word.ws, https://word.ws/millimeter. Based on Wiktionary, CC BY-SA 4.0.