Kilometre
noun ·Uncommon ·Advanced level
Definitions
- 1 An SI unit of length equal to 10³ metres. Symbol: km
"Holonyms: megametre < gigametre < terametre < petametre"
- 2 a metric unit of length equal to 1000 meters (or 0.621371 miles) wordnet
Antonyms
All antonymsExample
More examples"A three-person team is undertaking a 40,000-kilometre motorcycle journey from the Arctic Circle in Alaska to the southern tip of South America."
Etymology
Etymology tree Proto-Indo-European *ǵʰes- Proto-Indo-European *-lom Proto-Indo-European *ǵʰesliyoy Proto-Hellenic *kʰehliyoi Ancient Greek χίλιοι (khílioi)der. French kilo- Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)der. Latin metrumbor. French mètre French kilomètrebor. English kilometre From French kilomètre, from Ancient Greek χίλιοι (khílioi, “thousand”) + μέτρον (métron, “measure”); equivalent to kilo- + metre.
Related phrases
More for "kilometre"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.