A quantity or volume.
The number (the sum) of elements in a set.
The total, aggregate or sum of material (not applicable to discrete numbers or units or items in standard English).
To be the same as or equivalent to.
To total or evaluate.
The class of scale or magnitude of any amount, where each class contains values of a fixed ratio (most often 10) to the class preceding it. For example, something that is 2 orders of magnitude larger is 100 times larger, something that is 3 orders of magnitude larger is 1000 times larger, and something that is 6 orders of magnitude larger is a million times larger, because 10² = 100, 10³ = 1000, and 10⁶ = a million.