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1. The sign √ placed before a quantity, indicating extraction of the root designated by a raised integer. When extracting a square root, the raised integer is customarily omitted.
2. The radical sign together with a horizontal bar extending from its top to the end of the expression from which a root is to be extracted.
(Mathematics) the symbol √ placed before a number or quantity to indicate the extraction of a root, esp a square root. The value of a higher root is indicated by a raised digit in front of the symbol, as in 3√
the symbol √ or ^(1/2) indicating extraction of a root of the quantity that follows it, as √25=5.
n (Math) → Wurzelzeichen nt