extension Last modified: Monday, September 20, 2004
(1) An extra feature added to a standard programming language or system. (2) In DOS and some other operating systems, one or several letters at the end of a filename. Filename extensions usually follow a period (dot) and indicate the type of information stored in the file. For example, in the filename EDIT.COM, the extension is COM, which indicates that the file is a command file. (Depending on the operating system, the punctuation separating the extension from the rest of the filename may or may not be considered part of the extension itself.) Also see Data Formats and Their File Extensions in the Quick Reference section of Webopedia. (3) In Macintosh environments, a program that extends the system's capabilities. When they reside in the Extensions folder, extensions are loaded into memory when the system starts. On older Macs (System 6 and earlier), extensions were called inits. (4) Same as plug-in.
•E-mail this definition to a colleague• Sponsored listings ERP Extension Software: OpenPro Open Source Easy ERP - Offers web-based, open source LAMP complete ERP accounting system with financials, supply chain, manufacturing, CRM and ecommerce features. USB Products - Wholesale provider of computer cable and accessories. USB products include adaptors, cables, controller cards, flash drives, hubs, and switch boxes. USB Cables - Customize USB cables with your company logo. Guaranteed low prices and great service. Shop online. For internet.com pages about extension . Also check out the following links! Data Formats and Their File Extensions  Extensive alphabetical list of file extensions, with the applications that create them. Wotsit's Format  Programmer's resource for detailed file format and data format information. Sponsored listings USB cables - Broad-line distributor web site features real-time stock status and pricing, online ordering, RFQ, technical support, product datasheets and photos. Atlona HDMI Cables 1080p - HDMI 1.3 rated cables from $29.99, HDTV HDMI Cable from 3ft to 200ft Find Local Remodeling Contractors Here - Find Remodeling Pros at Service Magic. Our service is quick & free. No obligation required. Get contractors to compete for your business today! GlobalSpec: Extension Springs - Engineering search engine for technical information on extension springs companies. Browse catalogs and contact suppliers. GlobalSpec.com: USB Cable - Provides database of suppliers for USB Cable. Browse catalogs and view technical information.	File Management Mac OS associate BAK file BAT file COM file dot FTS file GID file init memory resident Give Us Your Feedback Shopping extension Products Compare Products,Prices and Stores Shop by Category: Nutrition 461 Store Offers Cables and Connectors 425 Model Matches Tools and Accessories 780 Store Offers Building Supplies 4518 Store Offers Plumbing Supplies 8730 Store Offers