ALL meanings of radical sign
rad·i·cal sign
R r - noun radical sign the symbol √ or indicating extraction of a root of the quantity that follows it, as √25=5 or . 1
- noun radical sign 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√ 0
- noun radical sign the sign (√ or ) used before a quantity to indicate that the square root (or a specified root indicated by an imposed index number) is to be extracted 0