A computer language for creating vector graphics.
Simply put, PostScript is a programming or page description language. It is a way of describing what a page should look like. Another such page description language is PCL (printer control language) found in HP printers. For the differences between PostScript and PCL see PS and PCL Comparisions.  A Postscript file can be identified by its .ps suffix. Postscript describes the text and graphic elements on a page to a black-and-white or color printer or other output device, such as a slide recorder, imagesetter, or screen display. Postscript handles industry-standard, scalable typeface in the Type 1 and TrueType formats. Users can convert Postscript files to the Adobe Portable Document Format (PDF) using the Adobe Acrobat product. PDF files present the document's printed appearance on a display screen. PostScript. PostScript is a graphics language invented by the people at Adobe Systems Incorporated. It is a simple stack language with a rich variety of functions. Writing graphics in this language is a joy because one can do some really cool things and because many printer devices can display it.  PostScript is a programming language optimized for printing graphics and text (whether on paper, film, or. is immaterial). In the jargon of the day, it is a page description language. It was introduced by Adobe in 1985 and first (to my knowledge) appeared in the Apple LaserWriter. The main purpose of PostScript was to provide a convenient language in which to describe images in a device independent manner. PostScript is a page description language (PDL) developed by Adobe. In essence, it is a programming language for describing how a page is to be printed or displayed.  Part of the Printers glossary: Postscript is a programming language that describes the appearance of a printed page. It was developed by Adobe in 1985 and has become an industry standard for printing and imaging. Postscript handles industry-standard, scalable typeface in the Type 1 and TrueType formats. Users can convert Postscript files to the Adobe Portable Document Format (PDF) using the Adobe Acrobat product. PDF files present the document's printed appearance on a display screen. Main » TERM » P ». A page description language (PDL) developed by Adobe Systems. PostScript is primarily a language for printing documents on laser printers, but it can be adapted to produce images on other types of devices. PostScript is the standard for desktop publishing because it is supported by imagesetters, the very high-resolution printers used by service bureaus to produce camera-ready copy. Leaving Xerox PARC, the pair developed a flagship product in Postscript, which has remained, even to this day, a graphics industry standard. Postscript, as the name sort of suggests, is actually a Turing-complete programming language. Directions are written out in a human-readable way, and communicated to the printer, which creates the high quality art from the instructions.  PostScript (PS) is a computer language for creating vector graphics. It is a dynamically typed, concatenative programming language and was created by John Warnock, Charles Geschke, Doug Brotz, Ed Taft and Bill Paxton in 1982. It is used as a page description language in the electronic and desktop publishing areas. Almost as complex as PostScript itself is its handling of fonts. The font system uses the PS graphics primitives to draw glyphs as line art, which can then be rendered at any resolution. A number of typographic issues had to be considered with this approach
http://desktoppub.about.com/cs/printing/a/postscriptprint.htm http://whatis.techtarget.com/definition/Postscript https://schneider.ncifcrf.gov/postscript.html http://www.tailrecursive.org/postscript/what-is-it.html https://kb.iu.edu/d/aepw http://whatis.techtarget.com/definition/Postscript http://www.webopedia.com/TERM/P/PostScript.html http://www.howtogeek.com/100016/printing-what-is-postscript/ https://en.wikipedia.org/wiki/PostScript
what is postscript