square rootsquare root
(plural square roots)
- (mathematics) Of a number, another number which, when squared, yields the original number; sometimes constrained to be the positive number when two solutions exist.
- Every complex number has two square roots; for example, the square roots of âˆ’4 are 2i and âˆ’2i.
Even in mathematical contexts, square root generally means positive square root. If there is a chance of ambiguity, prefer constructions like a square root or a complex square root to indicate the strict definition, or the positive square root or similar to indicate the looser sense.
- attributive form of square root