Meanings
plural millimetres · alternative US millimeter · alternative rare millimètre
- An SI/MKS unit of measure, the length of ¹⁄₁₀₀₀ of a metre. Symbol: mm
Meronyms: picometre < nanometre < micrometre
2 more examples
Holonyms: centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre
It is not permissible to use abbreviations for unit symbols or unit names, such as sec (for either s or second), sq. mm (for either mm² or square millimetre), cc (for either cm³ or cubic centimetre), or mps (for either m/s or metre per second).
2025 August 28, “The International System of Units (SI)”, in Bureau International des Poids et Mesures, archived from the original on 17 Sep 2025, page 147
Synonyms & antonyms
nounAn SI/MKS unit of measure, the length of ¹⁄₁₀₀₀ of a metre. Symbol: mm
More synonyms by meaning
nouna metric unit of length equal to one thousandth of a meter
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Frenchmillimètre
- Englishmillimetre
From French millimètre, equivalent to milli- + metre.
More words from French
Full word history & related roots →Translations
Arabic مِلِّيمِتْر
- مِلِّيمِتْر (millīmitr)unit of measure
Bulgarian милиме́тър
- милиме́тър (milimétăr)unit of measure
Catalan mil·límetre
- mil·límetreunit of measure
Chinese Cantonese 毫米, 公釐 /公厘
- 毫米 (hou⁴ mai⁵)unit of measure
- 公釐 /公厘 (gung¹ lei⁴)unit of measure
Chinese Mandarin 毫米, 公釐 /公厘
- 毫米 (háomǐ)unit of measure
- 公釐 /公厘 (gōnglí)unit of measure
Czech milimetr
- milimetrunit of measure
Danish millimeter
- millimeterunit of measure
Dutch millimeter
- millimeterunit of measure
Esperanto milimetro
- milimetrounit of measure
Estonian millimeeter
- millimeeterunit of measure
Finnish millimetri
- millimetriunit of measure
French millimètre
- millimètreunit of measure
German Millimeter
- Millimeterunit of measure
Greek χιλιοστόμετρο
- χιλιοστόμετρο (chiliostómetro)unit of measure
Hindi मिलीमीटर, सहस्रिमान
- मिलीमीटर (milīmīṭar)unit of measure
- सहस्रिमान (sahasrimān)unit of measure
Hungarian milliméter
- milliméterunit of measure
Icelandic millimetri
- millimetriunit of measure
Italian millimetro
- millimetrounit of measure
Japanese ミリメートル, ミリ
- ミリメートル (mirimētoru)unit of measure
- ミリ (miri)unit of measure
Korean 밀리미터, 밀리
- 밀리미터 (millimiteo)unit of measure
- 밀리 (milli)unit of measure
Latvian milimetrs
- milimetrsunit of measure
Lithuanian milimetras
- milimetrasunit of measure
Norwegian Bokmål millimeter
- millimeterunit of measure
Polish milimetr
- milimetrunit of measure
Portuguese milímetro
- milímetrounit of measure
Romanian milimetru
- milimetruunit of measure
Russian миллиме́тр
- миллиме́тр (millimétr)unit of measure
Scottish Gaelic milimeatair
- milimeatairunit of measure
Slovak milimeter
- milimeterunit of measure
Spanish milímetro
- milímetrounit of measure
Swahili milimita
- milimitaunit of measure
Swedish millimeter
- millimeterunit of measure
Tagalog milimetro
- milimetrounit of measure
Thai มิลลิเมตร
- มิลลิเมตร (min-lí-méet)unit of measure
Turkish milimetre
- milimetreunit of measure
Ukrainian міліме́тр
- міліме́тр (milimétr)unit of measure
Urdu ملِیمیٹر
- ملِیمیٹر (milīmīṭar)unit of measure
Vietnamese milimet
- milimetunit of measure
Yiddish מילימעטער
- מילימעטער (milimeter)unit of measure
Cite this entry
millimetre. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/millimetre
“millimetre.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/millimetre. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “millimetre,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/millimetre.
Source: millimetre on Wiktionary, CC BY-SA 4.0.