Definitions of vaporize:

• verb:   lose or cause to lose liquid by vaporization leaving a more concentrated residue
• verb:   turn into gas
• verb:   kill with or as if with a burst of gunfire or electric current or as if by shooting

  Example: "In this computer game, space travellers are vaporized by aliens"

• verb:   decrease rapidly and disappear

  Example: "All my stock assets have vaporized"