Definition of magnitude

• n. - Extent of dimensions; size; -- applied to things that have length, breath, and thickness.
• n. - That which has one or more of the three dimensions, length, breadth, and thickness.
• n. - Anything of which greater or less can be predicated, as time, weight, force, and the like.
• n. - Greatness; grandeur.
• n. - Greatness, in reference to influence or effect; importance; as, an affair of magnitude.