Magnitude \Mag"ni*tude\, n. [L. magnitudo, from magnus great. See Master, and cf. Maxim.]

1. Extent of dimensions; size; -- applied to things that have length, breath, and thickness.

Conceive those particles of bodies to be so disposed amongst themselves, that the intervals of empty spaces between them may be equal in magnitude to them all. --Sir I. Newton.

2. (Geom.) That which has one or more of the three dimensions, length, breadth, and thickness.

3. Anything of which greater or less can be predicated, as time, weight, force, and the like.

Source: Webster's Revised Unabridged Dictionary (1913)