A rounded vault forming the roof of a building or structure, typically with a circular base. The cathedral's dome is visible from miles away.
A sports stadium with a roof that is shaped like a dome. The game was held in the city's new dome, which can seat over 50,000 spectators.
A geological formation consisting of a rounded, uplifted area of rock. The geologists studied the ancient dome to understand the region's tectonic history.
A structure resembling the shape of a dome, often used in architecture or design. The observatory's dome can be rotated to view different parts of the sky.
informal, chiefly US: the human head or skull. He took a hard hit right on the dome.