recursive acronym

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recursive acronym
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A recursive acronym is an acronym that refers to itself. The term was first used in print in 1979 in Douglas Hofstadter's book (Gödel, Escher, Bach|Gödel, Escher, Bach: An Eternal Golden Braid), in which Hofstadter invents the acronym GOD, meaning "GOD Over Djinn", to help explain infinite series, and describes it as a recursive acronym. Other references followed, however the concept was used as early as 1968 in John Brunner's science fiction novel Stand on Zanzibar. In the story, the acronym EPT (Education for Particular Task) later morphed into "Eptification for Particular Task".Recursive acronyms typically form backwardly: either an existing ordinary acronym is given a new explanation of what the letters stand for, or a name is turned into an acronym by giving the letters an explanation of what they stand for, in each case with the first letter standing recursively for the whole acronym.

Computer-related examples

In computing, an early tradition in the hacker community (especially at MIT) was to choose acronyms and abbreviations that referred humorously to themselves or to other abbreviations. Perhaps the earliest example in this context – from 1960 – is the backronym "Mash Until No Good", which was created to describe Mung, and a while later was revised to "Mung Until No Good". It lived on as a recursive command in the editing language TECO.[3] In 1977 or 1978 came TINT ("TINT Is Not TECO"), an editor for MagicSix written (and named) by Ted Anderson. This inspired the two MIT Lisp Machine editors called EINE ("EINE Is Not Emacs", German for one) and ZWEI ("ZWEI Was EINE Initially", German for two). These were followed by Richard Stallman's GNU (GNU's Not Unix). Many others also include negatives, such as denials that the thing defined is or resembles something else (which the thing defined does in fact resemble or is even derived from), to indicate that, despite the similarities, it was distinct from the program on which it was based.The Free Software Movement and the Future of Freedom: The name "GNU", Richard Stallman, March 9th 2006An earlier example appears in a 1976 textbook on data structures, in which the pseudo-language SPARKS is used to define the algorithms discussed in the text. "SPARKS" is claimed to be a non-acronymic name, but "several cute ideas have been suggested" as expansions of the name. One of the suggestions is "Smart Programmers Are Required to Know SPARKS".Fundamentals Of Data Structures (Ellis Horowitz & Sartaj Sahni, Computer Science Press, 1976) (this example is tail recursive)

Notable examples

  • Allegro â€” Allegro Low LEvel Game ROutines (early versions for Atari ST were called "Atari Low Level Game Routines")
  • AGFA  — Always Go For AGFA
  • ANX â€” ANX's Not XNA
  • AROS â€” AROS Research Operating System (originally Amiga Research Operating System)
  • ATI Technologies Inc. â€” ATI Technologies Inc.
  • BAMF â€” BAMF Application Matching Framework
  • BIRD â€” BIRD Internet Routing Daemon
  • BOSH â€” Bosh Outer Shell
  • CAVE â€” CAVE Automatic Virtual Environment
  • cURL â€” Curl URL Request LibraryWEB,weblink curl, 17 years old today, Stenberg, Daniel, 20 March 2015,, 20 March 2015,
  • EINE â€” EINE Is Not Emacs
  • FIJI â€” FIJI Is Just ImageJ
  • FYBMEM â€” FYBMEM Your Basic Monitor Editor Mechanism
  • GiNaC â€” GiNaC is Not a CAS (Computer Algebra System)
  • GNU â€” GNU's Not Unix
  • GPE â€” GPE Palmtop Environment
  • gRPC â€” grpc Remote Procedure Calls
  • HIJOS — Hijos por la Identidad y la Justicia contra el Olvido y el Silencio
  • HIME â€” HIME Input Method EditorWEB,weblink HIME Input Method Editor, 8 May 2019,
  • INX â€” INX's Not X (a UNIX clone)
  • JACK â€” JACK Audio Connection Kit
  • JOE â€” Joe's Own Editor
  • KGS â€” KGS Go Server
  • LAME â€” LAME Ain't an MP3 EncoderWEB,weblink About LAME, 2016-02-20,
  • LIFE — LIFE Is For Ever
  • LiVES â€” LiVES is a Video Editing System
  • MEGA â€” MEGA Encrypted Global AccessWEB, MEGA,weblink 19 January 2013,
  • MINT â€” MINT Is Not TRAC
  • MiNT â€” MiNT is Not TOS (later changed to "MiNT is Now TOS")
  • Mung â€” Mung Until No GoodWEB,weblink The Jargon File: Mung, 2007-10-15,
  • Nano â€” Nano's Another editor
  • Nagios â€” Nagios Ain't Gonna Insist On Sainthood (a reference to the previous name of Nagios, "Netsaint"; agios [αγιος] is the Greek word for "saint")
  • NiL â€” NiL Isn't Liero
  • Ninja-ide â€“ Ninja-IDE Is Not Just Another IDE
  • NITE â€” NITE Isn't TECO Either (the 2nd offering from the creator of TINT)
  • OIL — Oil India Limited
  • pacc â€” pacc: a compiler-compilerWEB,weblink pacc: a compiler-compiler, 2012-05-14,weblink" title="">weblink 2012-07-18, yes,
  • PHP â€” PHP: Hypertext Preprocessor (from "Personal Home Page Tools," more frequently referenced as "PHP Tools."WEB, History of PHP,weblink, )
  • PINE â€” PINE Is Nearly Elm, originally; PINE now officially stands for "Pine Internet News and E-mail" PINN â€” PINN Is Not NOOBS
  • PIP â€” PIP Installs Packages
  • PIPER â€” PIPER Is PIPER Expanded Recursively (Google's internal version control system)
  • P.I.P.S. â€” P.I.P.S. Is POSIX on Symbian
  • Qins â€” Qins is not SlowQINS website
  • RPM â€” RPM Package Manager (originally "Red Hat Package Manager")
  • SPARQL â€” SPARQL Protocol And RDF Query Language
  • TikZ â€“ TikZ ist kein Zeichenprogramm (German; TikZ is not a drawing program)
  • TIARA â€” TIARA is a recursive acronym.EXE magazine, November 1996
  • (:fr:TiLP|TiLP) â€” TiLP is a Linking Program
  • TIP â€” TIP isn't Pico
  • TRESOR â€“ TRESOR Runs Encryption Securely Outside RAM
  • UIRA  â€” UIRA Isn't a Recursive Acronym
  • WINE â€” WINE Is Not an Emulator
WEB,weblink FAQ – The Official Wine Wiki, 2009-01-16, (Originally, Windows Emulator WEB,weblink Wine architecture, Wine HQ, 16 June 2012, )
  • XAMPP â€” XAMPP Apache MariaDB PHP Perl
  • XBMC â€” XBMC Media Center (originally Xbox Media Center)
  • XINU â€” Xinu Is Not Unix
  • XNA â€” XNA's Not Acronymed
  • XNU â€” X is Not UnixWEB, 2005,weblink Porting UNIX/Linux Applications to Mac OS X: Glossary, Apple Computer, 7 June 2017, .
  • YAML â€” YAML Ain't Markup Language (initially "Yet Another Markup Language")
  • Zinf â€” Zinf Is Not FreeAmp
  • ZWEI â€” ZWEI Was EINE Initially (“eins” and “zwei” are German for “one” and “two” respectively)

Mutually recursive or otherwise special

  • The GNU Hurd project is named with a mutually recursive acronym: "Hurd" stands for "Hird of Unix-Replacing Daemons", and "Hird" stands for "Hurd of Interfaces Representing Depth."
  • RPM, PHP, XBMC and YAML were originally conventional acronyms which were later redefined recursively. They are examples of, or may be referred to as, backronymization,{{Citation needed|date=September 2010|reason=There's little evidence that this word exists outside of Wikipedia.}} where the official meaning of an acronym is changed.
  • Jini claims the distinction of being the first recursive anti-acronym: 'Jini Is Not Initials'.FAQ for JINI-USERS Mailing List, Retrieved 18 November 2013Introduction to The Jini Specification, Arnold et al, Pearson, 1999, {{ISBN|0201616343}} It might, however, be more properly termed an anti-backronym because the term "Jini" never stood for anything in the first place. The more recent "XNA", on the other hand, was deliberately designed that way.
  • Most recursive acronyms are recursive on the first letter, which is therefore an arbitrary choice, often selected for reasons of humour, ease of pronunciation, or consistency with an earlier acronym that used the same letters for different words, such as PHP, which now stands for "PHP: Hypertext Preprocessor", but was originally "Personal Home Page". However YOPY, "Your own personal YOPY" is recursive on the last letter.


Some organizations have been named or renamed in this way:
  • BWIA â€” BWIA West Indies Airways (formerly British West Indian Airways)
  • FAIR â€” Fairness and Accuracy in Reporting
  • FALE â€” FALE Association of Locksport EnthusiastsWEB,weblink FALE Association of Locksport Enthusiasts, 2014-02-12,weblink" title="">weblink 2014-02-22, yes, BOOK,weblink FALE Association of Locksport Enthusiasts, 2014-02-12,
  • GES â€” GES Exposition Services (formerly Greyhound Exposition Services)
  • hEART â€” hEART the European Association for Research in Transportation
  • Heil â€” Heil Environmental Industries Limited, maker of garbage trucks
  • VISA â€” Visa International Service Association
  • WAT â€” WAT Automotive Technologies

In popular culture

  • TTP - a technology project in the Dilbert comic strip. The initials stand for "The TTP Project".WEB, Dilbert's TTP Project,weblink Dilbert, 9 July 2018,
  • GRUNGE - defined by Homer Simpson in The Simpsons episode "That '90s Show" as "Guitar Rock Utilizing Nihilist Grunge Energy", another uncommon example of a recursive acronym whose recursive letter is neither the first nor the last letter.
  • KOS-MOS - a character from the Xenosaga series of video games. "KOS-MOS" is a recursive acronym meaning "Kosmos Obey Strategical Multiple Operating Systems". It's unclear if it counts as a true recursive acronym, however, as the Kosmos referred to in the acronym may simply be an alternate spelling of cosmos.

See also




  • {{JargonFile}}

External links

  • {{Wiktionary-inline|recursive acronym}}
{{Use dmy dates|date=May 2019}}

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M.R.M. Parrott