Definition of kilometre noun from the Oxford Advanced Learner's Dictionary

  

kilometre

 noun
(especially US English kilometer)noun
BrE BrE//ˈkɪləmiːtə(r)//
 
; NAmE NAmE//ˈkɪləmiːtər//
 
; BrE also BrE//kɪˈlɒmɪtə(r)//
 
; NAmE also NAmE//kɪˈlɑːmɪtər//
 
(abbreviation k, km)
 
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a unit for measuring distance; 1 000 metres Word Origin late 18th cent.: from French kilomètre (see kilo-, metre).