sphere

باللغة العربية: فَلْكَة، كُرَة

1. A surface in three dimensions consisting of all points equidistant from a center. .
2. An object which appears to be bounded by a sphere; a round object, a ball.
3. Any of the concentric hollow transparent globes formerly believed to rotate around the Earth, and which carried the heavenly bodies; there were originally believed to be eight, and later nine and ten; friction between them was thought to cause a harmonious sound (the music of the spheres).
4. An area of activity for a planet; or by extension, an area of influence for a god, hero etc.
5. The region in which something or someone is active; one's province, domain. (figuratively) · sphere of influence
6. The natural, normal, or proper place (of something). · in one's sphere
7. The set of all points in three-dimensional Euclidean space (or n-dimensional space, in topology) that are a fixed distance from a fixed point .
8. The domain of reference of a proposition, subject, or predicate, or the totality of the particular subjects to which it applies. (dated)

الجمع spheres