any spherically shaped artifact | the outer boundary of an artifact or a material layer constituting or resembling such a boundary |
a particular aspect of life or activity | a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight |
the geographical area in which one nation is very influential | a superficial aspect as opposed to the real nature of something |
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected | information that has become public |
a solid figure bounded by a spherical surface (including the space it encloses) | the extended two-dimensional outer boundary of a three-dimensional object |
a three-dimensional closed surface such that every point on the surface is equidistant from the center | the outermost level of the land or sea |
a particular environment or walk of life | |