Mathematical suffix used after a number to indicate the nth root, e.g. 三乗根 (cube root).
See also: 三乗根 (さんじょうこん)
The cube root is also called the cubic root.
In math class, we learned how to calculate the fourth root.
nth root
square root
Compound of 乗 (じょう, 'power') and 根 (こん, 'root'), a straightforward mathematical term.