kilometer

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UK/kɪˈlɒm.ɪ.tə/UK/ˈkɪl.əˌmiː.tə/US/kɪˈlɑ.mɪ.təɹ/US/ˈkɪl.əˌmi.təɹ/

A form of kilometre — An SI unit of length equal to 10³ metres. Symbol: km

Less commonScrabble 15

Meanings

nounkilometer (plural kilometers)

plural kilometers

  1. USUS spelling of kilometre.

    At around 5:30 a.m., crewmembers of a JCG patrol boat received an SOS from the 106,726-ton freighter Anangel Courage. The patrol vessel and a JCG plane found the freighter on the high seas about 67 kilometers away from Uotsuri Island, one of the Senkaku Islands, which are also claimed by China.

    2016 August 11, “Chinese fishing boat collides with Greek freighter near Senkakus, 6 rescued”, in The Mainichi, archived from the original on 12 Aug 2016
    1 more example

    When classes start in September, the University of Macau’s new campus — still under construction on about a square kilometer, or roughly 250 acres, on Hengqin Island in southern Guangdong Province — will be “handed over” to Macau governance in accordance with a 2009 bill by the National People’s Congress in Beijing.

    2013 July 14, Joyce Lau, Calvin Yang, “University of Macau Moves Over the China Border”, in The New York Times, →ISSN, →OCLC, archived from the original on 18 Jul 2013, Asia Pacific

Synonyms & antonyms

nouna metric unit of length equal to 1000 meters (or 0.621371 miles)

Broader
metric linear unit

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Englishkilo-
  2. Proto-Indo-European*med-
  3. Proto-Indo-European*médeti
  4. Proto-Germanic*metaną
  5. Proto-West Germanic*metan
  6. Old Englishmetan
  7. Middle Englishmeten
  8. Middle Englishmetere
  9. Englishmeter
  10. Englishkilometer

From kilo- + meter.

Full word history & related roots →

Rhymes & wordplay

Rhymes with kilometer

All rhymes →

Anagrams

Cite this entry
APA

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

MLA

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

Chicago

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

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