What is "myriameter"

Myriameter \Myr"i*a*me`ter\, Myriametre \Myr"i*a*me`tre\, n. [F. myriam[`e]tre. See Myria-, and Meter.] A metric measure of length, containing ten thousand meters. It is equal to 6.2137 miles.

n. (alternative form of myriametre English)

n. a metric unit of length equal to 10,000 meters [syn: myriametre, mym]