キロメートルの定義と意味 - メリアム・ウェブスター

KILOMETER Definition & Meaning - Merriam-Webster Est. 1828 Dictionary Definition Definition Did you know? Example Sentences Word History Rhymes Entries Near Related Articles Cite this Entry Citation Kids Definition Kids Medical Definition Medical More from M-W Show more Show more Citation Kids Medical More from M-W Save Word To save this word, you'll need to log in. Log In kilometer noun ki·​lo·​me·​ter kə-ˈlä-mə-tər ki- ; ˈki-lə-ˌmē-tər ˈkē-lə- : a metric unit of length equal to 1000 meters see Metric System Table How do you pronounce kilometer ?: Usage Guide In North American speech kilometer is most often pronounced with primary stress on the second syllable. This pronunciation is also heard frequently in British speech. Those who object to second syllable stress say that the first syllable should be stressed in accord with the stress patterns of centimeter, millimeter , etc. However, the pronunciation of kilometer does not parallel that of other metric compounds. From 1828 to 1841 Noah Webster indicated only second syllable stress, and his successor added a first syllable stress variant in the first Merriam-Webster dictionary of 1847. Thus, both pronunciations are venerable. Most scientists use second syllable stress, although first syllable stress seems to occur with a higher rate of frequency among scientists than among nonscientists. Did you know? A kilometer is equal to about 62/100 of a mile, and a mile is equal to about 1.61 kilometers. The U.S. has been slow to adopt metric measures, which are used almost everywhere else in the world. Though our car speedometers are often marked in both miles and kilometers, the U.S. and Great Britain are practically the only developed nations that still show miles rather than kilometers on their road signs. But even in the U.S., footraces are usually measured in meters or kilometers, like the Olympic races. Runners normally abbreviate kilometer to K : "a 5K race" (3.1 miles), "the 10K run" (6.2 miles), and so on. Examples of kilometer in a Sentence Recent Examples on the Web Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback . The pickleball tournament the players were supposed to compete in at the Cranky Pickle in New Braunfels, about 30 miles (48 kilometers ) northeast of San Antonio, canceled Friday’s events, said Martin Robertson, head pro at the venue. — Hallie Golden, Chicago Tribune , 2 May 2026 The hospital discharged Lewis to police, who flew him to the Northern Territory capital Darwin, 1,500 kilometers (900 miles) to the north, for his own safety to be detained. — ABC News , 1 May 2026 At Monza, the track in Italy, drivers approach pit lane at 300 kilometers an hour, roughly 150 mph. — Chris Perkins, Sun Sentinel , 1 May 2026 There are still a couple of questions to be answered though even as construction commences on the 67,500-capacity facility, which will be next to Cleveland Hopkins International Airport and about 15 miles (24 kilometers ) south of downtown Cleveland. — CBS News , 1 May 2026 See All Example Sentences for kilometer Word History Etymology French kilomètre , from kilo- + mètre meter First Known Use 1810, in the meaning defined above Time Traveler The first known use of kilometer was in 1810 See more words from the same year Rhymes for kilometer barometer bolometer chronometer geometer hydrometer hygrometer micrometer odometer photometer psychrometer pycnometer pyrometer See All Rhymes for kilometer Browse Nearby Words kilomegacycle kilometer kilooersted See all Nearby Words Articles Related to kilometer Obscure Units of Measurement Quiz Do you know these uncommon units of measurement? Learning them could enrich your life immeasurably. Cite this Entry Style MLA Chicago APA Merriam-Webster “Kilometer.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/kilometer. Accessed 5 May. 2026. Copy Citation Kids Definition kilometer noun ki·​lo·​me·​ter kə-ˈläm-ət-ər kil-ˈäm- ˈkil-ə-ˌmēt-ər : a metric unit of length equal to 1000 meters see metric system Medical Definition kilometer noun ki·​lo·​me·​ter variants or chiefly British kilometre ˈkil-ə-ˌmēt-ər kə-ˈläm-ət-ər : 1000 meters More from Merriam-Webster on kilometer Nglish: Translation of kilometer for Spanish Speakers Last Updated: 3 May 2026 - Updated example sentences Love words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged More from Merriam-Webster Word of the Day augur See Definitions and Examples » Get Word of the Day daily email! 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