noun /pər.ˈfɔr.məns,pə.ˈfɔː.məns,pɚ.ˈfɔɹ.məns/
a) The act of performing; carrying into execution or action; execution; achievement; accomplishment; representation by action; as, the performance of an undertaking of a duty.
b) That which is performed or accomplished; a thing done or carried through; an achievement; a deed; an act; a feat; especially, an action of an elaborate or public character.
Wikipedia foundation.