Noun has 2 senses

• order of magnitude(n = noun.attribute) order - a degree in a continuum of size or quantity; "an explosion of a low order of magnitude"; "it was on the order of a mile"


• order of magnitude(n = noun.linkdef) magnitude - 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;