Kilometre

n. (Km) unit of distance equalling one thousand meters (also kilometer)

A kilometre (American spelling: kilometer, symbol km) is a unit of length in the metric system, equal to one thousand metres, the current SI base unit of length. It can be written in scientific notations as 1×10³ m (engineering notation) or (exponential notation) — both meaning . nanometre <<<  micrometre <<<  millimetre <  centimetre <  decimetre <  metre <  decametre <  hectometre <  kilometre <<<  megametreA corresponding unit of area is the square kilometre and a corresponding unit of volume is the cubic kilometre.
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Noun
1. a metric unit of length equal to 1000 meters (or 0.621371 miles)
(synonym) kilometer, km, klick
(hypernym) metric linear unit
(part-holonym) myriameter, myriametre, mym
(part-meronym) hectometer, hectometre, hm

n. kilometer, unit of distance equalling one thousand meters, mark with kilometric reference point

n. kilometer, kilometre [Brit.]