Definition of: stadium

(stā′dē·əm) noun plural ·di·a (-dē·ə), for def. 2 ·di·ums
1. In ancient Greece, a course for footraces, with banked seats for spectators, as at Olympia and Athens, where games were held.
2. A similar modern structure in which athletic games are played: the stadium at Harvard.
3. An ancient Greek measure of length, equaling 606.75 feet.
4. A degree of progress or development.
5. Med. A given stage or period in the course of a disease. [<L <Gk. stadion, a measure of length]