cube root

noun

, Mathematics.

1. a quantity of which a given quantity is the cube:

   The cube root of 64 is 4.

cube root

noun

1. the number or quantity whose cube is a given number or quantity: 2 is the cube root of 8 (usually written ³√ 8 or 8 ^1⁄3)

cube root

1. The number whose cube is equal to a given number. For example, the cube root of 125 is 5, since 5 ³ = 125.

Word History and Origins

Origin of cube root¹

First recorded in 1690–1700

Example Sentences

Ethel's mind was in too irritated and tumultuous a state for her to derive her usual solace from Cube Root.

From Project Gutenberg

Does a knowledge of botany necessarily involve a knowledge of square root and cube root?

From Project Gutenberg

I feel a great deal prouder when I've finished a sum in cube root, because I simply hate arithmetic.

From Project Gutenberg

Whitewashing a fence is quite as hard work as solving a problem in decimals or cube root.

From Project Gutenberg

In the presence of even such a simple truth as cube root he stands helpless and enthralled.

From Project Gutenberg