A course on which foot races were held in ancient Greece, usually semicircular and having tiers of seats for spectators, A Greek itinerary unit, originally the distance between successive stations of the shouters and runners employed to estimate distances, A race course; especially, the Olympic course for foot races

a concave shape whose distinguishing characteristic is that the concavity faces downward, a stadium that has a roof, A roof or vault having a circular, polygonal, or elliptical base and a generally hemispherical or semispherical shape, intransitive verb_ To cover with or as if with a dome, To rise or swell into the shape of a dome