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cube root

American

noun

Mathematics.

a quantity of which a given quantity is the cube.

The cube root of 64 is 4.

cube root British

noun

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 )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

cube root Scientific

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

Etymology

Origin of cube root

First recorded in 1690–1700

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

cube root

Mary: The cube root of 2,197 is 13.

From Scientific American ● Nov. 25, 2020

The next example involves a cube root and so will require different thinking.

From Textbooks ● May 6, 2020

The cube root then will be between 4 and 5.

From Textbooks ● May 6, 2020

More notably, 2017 is the smallest whole number whose cube root begins with ten distinct digits:

From The Guardian ● Jan. 2, 2017

You might as well call it a dodecahedron, or the cube root of minus nothing.'

From 'That Very Mab' by Kendall, May

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023