square root
Definition from Wiktionary, a free dictionary
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[edit] English
[edit] Noun
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Plural |
square root (plural square roots)
- (mathematics) Of a number, another number which, when squared, yields the original number; sometimes constrained to be the positive number where two solutions exist.
- Every complex number has two square roots; for example, the square roots of -4 are 2i and -2i.
[edit] Usage notes
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.
[edit] Translations
number
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