An abstract sphere of infinite radius which serves as the imaginary backdrop for celestial objects, and of which the visible sky is one hemisphere.
the figure of the universe as an imaginary sphere whose center is the Earth
A spherical model of Earth or other planet.
The planet Earth.
A circular military formation used in Ancient Rome, corresponding to the modern infantry square.
A land snail of the genus Mesodon
A light bulb.
A woman's breast.
Any spherical (or nearly spherical) object.
To become spherical.
To make spherical.