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 )

---

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

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 • Apr. 20, 2020

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

From The Guardian • Jan. 2, 2017

We know that because Because the cube root is easy to find, it is easiest to find the cube root before squaring for this problem.

From Textbooks • Feb. 13, 2015

Figure 21 For the cube root function the domain and range include all real numbers.

From Textbooks • Feb. 13, 2015

A good neighbor doubled his safety and his resources, a group of good neighbors increased his comfort and his prospects in a ratio that grew like the cube root.

From A Short Life of Abraham Lincoln Condensed from Nicolay & Hay's Abraham Lincoln: A History by Nicolay, John George