Xerox doesn't mean anything in Greek or any other language. The process that is the basis of the modern photocopier is called "xerography." This is a modern term made from two Greek words that meand "dry writing." "Xero" means dry and "graphos" means writing.
The trademark, Xerox is derived from the word 'xerography", which describes the process used in the original Xerox plain paper copiers. Xerography is an invented term and comes from the root words "xero," Greek for "dry," and "graphos," Greek for "writing."
xerox
If by "Xerox machine" you mean a copier or printer marketed by the Xerox Corporation, the only rays emitted are rays of light emitted by parts of some copiers.
Xerox is a company best known for its photocopying technology. As a verb, it is often used informally to mean making a photocopy of a document, but technically it refers to the act of copying using a Xerox machine.
The word Xerox is short for the Xerox Corporation and is also a trademark for that corporation. As an adjective it can also be used to reference a particular product marketed by Xerox Corporation or its affiliate, Fuji Xerox Corporation. The word is used incorrectly by some as a verb to mean "make a copy," but as a trademark the word is a proper noun and not a verb.
The term "Xerox copy" is often incorrectly used to mean the same thing as "photocopy." But "Xerox" is a proper noun and a trademark for the Xerox Corporation so "Xerox copy" actually means a copy made on a copier that carries the Xerox brand. The word "photocopy" means any copy that has been made using a photographic process and includes copies made on Xerox machines, and other copiers.
Xerographics is a word coined by the Xerox company to describe its dry photocopying process. Literally xero is Greek for dry and graphics is from the Greek for writing
Xerox is shortened from xerography, which is a new English word composed of old Greek roots. The root xer(o)- means dry, and the root -graph means write or draw.
Xerox does not mean photo copy, although some people use it as if it did mean that. "Xerox is a short form of the name of the company, Xerox Corporation, and a registered trademark owned by that company. Photocopy is a noun and means a copy of an original made through the use of a photographic process. The word photocopy can also be a verb meaning to make such a copy. Xerox Corporation is widely known as the company that introduced the first highly successful machines that made photocopies using dry ink and plain paper.
Neither the word "Xerox" nor the Xerox Corporation existed in medieval times. Xerox is a trademark and an invented word - invented around 1958. Xerxes, however, was an ancient Persian emperor, long before medieval times, but his name was known in medieval Europe.
The phrase "you are about to delivered of a baby xerox machine" is someone's cute way of announcing that a photocopy machine will be delivered soon.
They rented a new Xerox machine from Xerox Corporation.