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Definition

Radicand

The radicand is the number or expression that appears underneath the radical sign. In the notation m\sqrt{m}, the value mm is the radicand — it specifies which quantity's square root is being evaluated. For example, in 100\sqrt{100}, the radicand is 100100, and since 102=10010^2 = 100, the expression equals 1010. In the notation 0\sqrt{0}, the radicand is 00, and because 02=00^2 = 0, the expression evaluates to 00. Recognizing the radicand is important because it tells you what number the square-root operation acts on, while the radical sign itself indicates which operation is being performed.

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Updated 2026-04-21

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