radical sign


: the sign √͞ or √ placed before an expression to denote that the square root is to be extracted or that the root marked by an index (as in ∛ or ∛ for the cube root) is to be extracted

Examples of radical sign in a Sentence

Recent Examples on the Web This phenomenon is most pronounced between the FANG stocks and the broader global equities market, as this chart, courtesy of MarketEar, shows: The all-equity MSCI World (in white) is seeing something like a square-root symbol (or, take your pick, a radical sign). Bernhard Warner, Fortune, 23 June 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'radical sign.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1668, in the meaning defined above

Time Traveler
The first known use of radical sign was in 1668

Dictionary Entries Near radical sign

Cite this Entry

“Radical sign.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radical%20sign. Accessed 24 May. 2024.

Kids Definition

radical sign

: the sign √ placed before an expression in mathematics to indicate that its root is to be found
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