στάδιον

Etymology
, but possibly from, from , in reference to the fixed distance of the course.

Noun

 * 1)  A 600-foot track for footraces and the surrounding stadium.
 * 2)  A 600-foot footrace.
 * 3)  A stade, a unit of distance based on the length of a racetrack, equal to 600 Greek feet (variously 150–210m at different places and times).