Lucid Lexicon

sphere

from Latin sphaera "globe, sphere, orb, orrery/spheres of planets"

sphere noun

mathematics
- a three-dimensional closed surface such that every point on the surface is equidistant from a given point, the centre
- the solid figure bounded by this surface or the space enclosed by it. Equation: ( x–a)2 + ( y– b)2 + ( z–c)2 = r2, where r is the radius and (a, b, c) are the coordinates of the centre; surface area: 4πr2; volume: 4πr3/3
any object having approximately this shape; globe
the night sky considered as a vaulted roof; firmament
any heavenly object such as a planet, natural satellite, or star
in the Ptolemaic or Copernican systems of astronomy: one of a series of revolving hollow globes, arranged concentrically, on whose transparent surfaces the sun (or in the Copernican system the earth), the moon, the planets, and fixed stars were thought to be set, revolving around the earth (or in the Copernican system the sun)
particular field of activity; environment
a social class or stratum of society

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~☉~	lucid definition; added layer of lucidity, or aethereal context
⚜	classic definition
☣	artificium definition; usually words which have undergone a warped evolution, or a complete perversion of the original sense