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radical sign
noun
, Mathematics.
- the symbol √ or indicating extraction of a root of the quantity that follows it, as √25=5 or .
radical sign
noun
- 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√
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Word History and Origins
Origin of radical sign1
First recorded in 1660–70
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Example Sentences
The radical sign (√) was derived from the initial letter of the word radix.
From Project Gutenberg
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