A canton of Switzerland.

A venue where sporting events are held. / An Ancient Greek racecourse, especially, the Olympic course for foot races.

(historical) The chief magistrate, then later, hereditary chief of state of the Dutch Republic.

(surveying) A level staff or graduated rod used by surveyors to measure differences in level, or to measure horizontal distances by sighting the stadia hairs (graduations) through a telescope.

plural of stadion

plural of stadium

(archaic) A prop or support; a staff, crutch. / The lower part or supporting frame of a stack, a stack-stand. / Any supporting framework or base. / A small tree; sapling.

To form staddles of hay. / (forestry) To mark a sapling to be spared during a cut down of trees.

(historical units of measure, dated) Synonym of stadion: a former Greek unit of distance (variously 150–210 m at different places and times). / (dated) A track for footraces and its surrounding stadium.

(units of measure, obsolete) Synonym of fathom.