Emily Dickinson Lexicon

SUR-SOL'ID, n. [sur and solid, or surdesolid.]

In mathematics, the fifth power of a number; or the product of the fourth multiplication of a number considered as the root. Thus 3X3=9, the square of 3, and 9x3=27, the third power or cube, and 27x3=81, the fourth power, and 81x3=243, which is the sursolid of 3.