magnitude

noun

1. 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. 2

   relative importance

   a problem of the first magnitude

3. 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