square root
About 2.68 uses per million words.
Meaning
- noun The number which, when squared, yields the original number.
The square roots of 4 are 2 and −2, the square root of 0 is 0, and the square roots of −4 are 2i and −2i.
- noun The positive number which, when squared, yields another number: the principal square root.
The square root of 4 is 2. No negative real square roots exist. Negative numbers have no real square roots.
Similar words
principal square root sqrt square cube root square number root mean square radicand root square root decomposition surd
Word family
square roots
Save “square root” to learn later