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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.


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Word History and Origins

Origin of cube root1

First recorded in 1690–1700

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Example Sentences

Its lower legislative chamber, the House of Commons, has 338 seats, almost exactly in line with the cube root law’s expectation of 335 seats.

It’s known as the cube root law in political science, or the fact that the size of a country’s parliament often hews to the cube root of the nation’s population.

After all, there is no law that says countries’ parliaments must be the cube root of their population, yet they often are, as the chart below shows.

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

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

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

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

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

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