excess (plural excesses)

1. The degree or amount by which one thing or number exceeds another, more than needed ; remainder; surplus as, the difference between two numbers is the excess of one over the other. Excess Inventory being that which is extra and not needed.

2. Being of a measure beyond enough, necessity, or duty; Excess exceeds what is usual or proper; superabundance; extravagance; as, an excess of provisions or of light.

   • To gild refined gold, to paint the lily, To throw a perfume on the violet, ... Is wasteful and ridiculous excess. - Shakespeare
   • That kills me with excess of grief, this with excess of joy. - Walsh

3. An undue indulgence of the appetite like in gluttony; transgression of proper moderation in natural gratifications; intemperance; dissipation. More than needed.

   • Be not drunk with wine, wherein is excess. Ephesians v. 18
   • Thy desire ... leads to no excess That reaches blame. - Milton

4. Spherical excess,  in geometry the amount by which the sum of the three angles of a spherical triangle exceeds two right angles. The spherical excess is proportional to the area of the triangle.

5. A condition on an insurance policy by which the insured pays for the first part of any claim, in exchange for a lower premium.