decametre

n. (British spelling variant for decameter) unit of length equal to ten meters

A decametre (American spelling: decameter, symbol dam) is a very rarely used unit of length in the metric system, equal to ten metres, the current SI base unit of length. It can be written in scientific notation as (exponential notation) — meaning .nanometre <<<  micrometre <<<  millimetre <  centimetre <  decimetre <  metre <  decametre <  hectometre <  kilometreThis measure is included mostly for completeness. One of the few practical uses of the decameter is for altitude of geopotential heights (circumscribing equal pressure) in meteorology. Interestingly, meteorologists also use another seldom encountered SI prefix: hecto- in hectopascal (hPa).
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Noun
1. a metric unit of length equal to ten meters
(synonym) decameter, dekameter, dekametre, dam, dkm
(hypernym) metric linear unit
(part-holonym) hectometer, hectometre, hm
(part-meronym) meter, metre, m

n. decametre, decameter

(n.)
A measure of length in the metric system; ten meters, equal to about 393.7 inches.