cube root


: a number whose cube is a given number

Examples of cube root in a Sentence

The cube root of 8 is 2.
Recent Examples on the Web What’s the cube root of 27? Kevin Fisher-Paulson, San Francisco Chronicle, 13 July 2021 Simply taking the cube root of this number, this is the volume of a cube 92 meters on a side. John Conway, Discover Magazine, 20 Aug. 2010 If true, then the coefficients of G are actually bounded by the cube root of 10 (about 2.15), and not just its square root. Quanta Magazine, 1 June 2022 This led to his theory of surreal numbers — a huge new number system containing not only all the real numbers, but also a boggling collection of infinites and infinitesimals, like π minus 1 divided by the cube root of infinity. New York Times, 16 May 2020 In mathematical terms, the amplitude for exchange of our quarticles will be multiplied by the cube root of –1. Quanta Magazine, 28 Feb. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cube root.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1679, in the meaning defined above

Time Traveler
The first known use of cube root was in 1679

Dictionary Entries Near cube root

Cite this Entry

“Cube root.” Dictionary, Merriam-Webster, Accessed 25 Apr. 2024.

Kids Definition

cube root

: a number whose cube is a given number
the cube root of 27 is 3

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