2. The act of becoming unseen to the naked eye through the use of items, spells, or by paranormal reasons.
3. Not being visible.
2. The ability of Harry Potter's invisibility cloak. When no one is under it, it's visible. When it is covering someone's body, it grants invisibility for no apparent explanation except for the fact it's magic.
3. "You are a ghost Fisher, be nothing more than a Splinter Cell."