### noun

**(1) **The property of relative size or extent (whether large or small)

"They tried to predict the magnitude of the explosion"

"About the magnitude of a small pea"

**(2) **Relative importance

"A problem of the first magnitude"

**(3) **A number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10