noun

kilometer

kilometre

The race is ten kilometers long.

The race is ten kilometres long.

We live about a kilometer from the school.

We live about a kilometre from the school.

a kilometer from ((sth.)) a unit of length equal to 1,000 metres We live about a kilometer from the school.

Synonyms: km (abbreviation); Antonyms: meter, mile

From Greek 'khilioi' (thousand) + 'metron' (measure). It literally means 'a thousand metres'.

Remember that the prefix 'kilo-' means 1000. So, a kilometre is 1000 metres.

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