Pronunciation: ( —n.ik-ses', ek'ses; —adj., v.ek'ses, ik-ses'),[key] —n. 1. the fact of exceeding something else in amount or degree: His strength is in excess of yours. 2. the amount or degree by which one thing exceeds another: The bill showed an excess of several hundred dollars over the estimate. 3. an extreme or excessive amount or degree; superabundance: to have an excess of energy. 4. a going beyond what is regarded as customary or proper: to talk to excess. 5. immoderate indulgence; intemperance in eating, drinking, etc.
—adj. more than or above what is necessary, usual, or specified; extra: a charge for excess baggage; excess profits.
—v.t. to dismiss, demote, transfer, or furlough (an employee), esp. as part of a mass layoff.