# cube root

noun, Mathematics
1.
a quantity of which a given quantity is the cube:
The cube root of 64 is 4.
Origin of cube root
1690-1700
1690-1700
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for cube root
Historical Examples
• Does a knowledge of botany necessarily involve a knowledge of square root and cube root?

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

May Kendall and Andrew Lang
• Each has now a clawing consciousness of his approximation to the infinitely little—the cube root of nothing.

Henry A. Castle
• I studied algebra this winter, and went as far as cube root.

• The mathematician Wallis, in bed, and in the dark, extracted the cube root from a number consisting of thirty figures.

• The number one is a cube root of itself, and represents our own universe.

Roger Phillips Graham
• Square that quantity and you will get the third cube root of unity.

Roger Phillips Graham
• The time of revolution varies as the square of the cube root of the distance (Kepler's third law).

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

Francis B. Pearson
• The range in nautical miles of a green light apparently is proportional to the cube root of the candle-power.

M. Luckiesh
British Dictionary definitions for cube root

## 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 81⁄3)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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cube root in Science
 cube root   The number whose cube is equal to a given number. For example, the cube root of 125 is 5, since 53 = 125.
The American Heritage® Science Dictionary
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### Difficulty index for cube root

Few English speakers likely know this word

### Word Value for cube

8
11
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