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cube root

American  

noun

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

    The cube root of 64 is 4.


cube root British  

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 )

"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  
  1. 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.

Each of the numbers so large you can’t name also has a square root, a cube root and so on, ad infinitum.

From Scientific American

He extracted cube roots and integrated functions of varying complexity.

From Literature

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

From The Guardian

Youngsters usually learn about square and cube roots of numbers in the early years of secondary school.

From BBC

But not much is known about the continued fraction representations of some other pretty easy to describe numbers such as the cube root of 2 and π.

From Scientific American