Stadium, the course on which were celebrated the great games (foot-racing, wrestling, &c.) of ancient Greece, held at Olympia, Athens, and other places; the most famous was that laid out at Olympia; length 600 Greek feet, which was adopted as the Greek standard of measure, and equalled 606½ English feet.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Stabat Mater * Stadtholder