Definition for Magnitude

From Biology Forums Dictionary

In mathematics, magnitude is the size of a mathematical object, a property by which the object can be compared as larger or smaller than other objects of the same kind. More formally, an object's magnitude is an ordering (or ranking) of the class of objects to which it belongs.

For example, –6 is greater greater in magnitude than +4 because -6 is 6 units away from 0 versus 4.