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A stadium (plural stadiums or stadia) is a place or venue for (mostly) outdoor sports, concerts, or other events and consists of a field or stage either partly or completely surrounded by a tiered structure designed to allow spectators to stand or sit and view the event.
Most of the stadiums with a capacity of at least 10,000 are used for
"Stadium" is the
The equivalent Roman measure, the stadium, had a similar length – about 185 m (607 ft) – but instead of being defined in feet was defined using the Roman standard
The English use of stadium comes from the tiered infrastructure surrounding a Roman track of such length.
Most dictionaries provide for both stadiums and stadia as valid English plurals.