1. (

• magnitude

) 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. (

• order_of_magnitude ,
• 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 ;

3. (

• magnitude ,

) relative importance; "a problem of the first magnitude" ;