kasahorow English Dictionary

a heavy, colorless, and relatively inert gaseous element that occurs in air as about one part in 20 million by volume and is used especially in thyratrons and specialized flashtubes (identified 1898)

• a copy made by a xerographic printer
• photocopy: reproduce by xerography
• a duplicator (trade mark Xerox) that copies graphic matter by the action of light on an electrically charged photoconductive insulating surface in which the latent image is developed with a resinous powder