A unit of length in the metric system equal to 10 meters, or about 33 feet.
From French décamètre, combining deca- (ten) and metre (meter). Established as part of the metric system in 18th-century France.
The decametre is rarely used in everyday life because it's awkwardly sized—too long to measure rooms but too short to measure distances between cities, showing how not every metric unit survives in practice.
Complete word intelligence in one call. Free tier — 50 lookups/day.