, or Surdesolid, in Arithmetic, the 5th power of a number, considered as a root. The number 2, for instance, considered as a root, produces the powers thus:
| 2 | = | 2 | the root or 1st power, |
| 2 X | 2 = | 4 | the square or 2d power, |
| 2 X | 4 = | 8 | the cube or 3d power, |
| 2 X | 8 = | 16 | the biquadratic or 4th power, |
| 2 X | 16 = | 32 | the Sursolid or 5th power. |
Sursolid Problem, is that which cannot be resolved but by curves of a higher kind than the conic sections.
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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.
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