Other forms: presences
Presence is the state of being somewhere. When you get an invitation that reads "Your presence is requested,” you are being asked to show up. Your style of being there — your demeanor or bearing — is also your presence.
Usually, presence is a physical thing. Since the 1600s, the word has also meant something otherwordly, a spiritual or divine presence. If you suddenly feel a weird presence in the room, perhaps it's a ghost . . . or just the cat. Use the phrase "presence of mind" to indicate when someone is quick-witted or just paying attention. While your job washing skyscraper windows doesn't require a lot of brain work, it's a good idea to keep your presence of mind while working.