Phaser can refer to:* Phaser (fictional weapon), in the Star Trek fictional universe, a beam weapon commonly used by Starfleet. Likely acronyms: Photon Amplification by Stimulated Emission of Radiation, or Phased Energy Rectificator. Phaser (effect), in electronics, an audio signal processor used to distort the signal Light Phaser, a lightgun for the Sega Master System video game system Xerox Phaser, Xerox's trade name for makes of thermal transfer printers, solid ink printers and color laser… (More on Phaser)