any spherically shaped artifact | the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected |
a particular aspect of life or activity | an extreme state of adversity; the lowest point of anything |
the geographical area in which one nation is very influential | |
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected | |
a solid figure bounded by a spherical surface (including the space it encloses) | |
a three-dimensional closed surface such that every point on the surface is equidistant from the center | |
a particular environment or walk of life | |