Demon

from WordNet (r) 3.0 (2006)
demon
    n 1: an evil supernatural being [syn: {devil}, {fiend}, {demon},
         {daemon}, {daimon}]
    2: a cruel wicked and inhuman person [syn: {monster}, {fiend},
       {devil}, {demon}, {ogre}]
    3: someone extremely diligent or skillful; "he worked like a
       demon to finish the job on time"; "she's a demon at math"
    
from The Collaborative International Dictionary of English v.0.48
Demon \De"mon\, n. [F. d['e]mon, L. daemon a spirit, an evil
   spirit, fr. Gr. dai`mwn a divinity; of uncertain origin.]
   1. (Gr. Antiq.) A spirit, or immaterial being, holding a
      middle place between men and deities in pagan mythology.
      [1913 Webster]

            The demon kind is of an intermediate nature between
            the divine and the human.             --Sydenham.
      [1913 Webster]

   2. One's genius; a tutelary spirit or internal voice; as, the
      demon of Socrates. [Often written {d[ae]mon}.]
      [1913 Webster]

   3. An evil spirit; a devil.
      [1913 Webster]

            That same demon that hath gulled thee thus. --Shak.
      [1913 Webster]
    
from Jargon File (4.4.4, 14 Aug 2003)
demon
 n.

   1. Often used equivalently to {daemon} -- especially in the {Unix}
   world, where the latter spelling and pronunciation is considered
   mildly archaic.

   2. [MIT; now probably obsolete] A portion of a program that is not
   invoked explicitly, but that lies dormant waiting for some
   condition(s) to occur. See {daemon}. The distinction is that demons
   are usually processes within a program, while daemons are usually
   programs running on an operating system.

   Demons in sense 2 are particularly common in AI programs. For example,
   a knowledge-manipulation program might implement inference rules as
   demons. Whenever a new piece of knowledge was added, various demons
   would activate (which demons depends on the particular piece of data)
   and would create additional pieces of knowledge by applying their
   respective inference rules to the original piece. These new pieces
   could in turn activate more demons as the inferences filtered down
   through chains of logic. Meanwhile, the main program could continue
   with whatever its primary task was.
    
from The Free On-line Dictionary of Computing (8 July 2008)
demon

   1. <operating system> (Often used equivalently to {daemon},
   especially in the {Unix} world, where the latter spelling and
   pronunciation is considered mildly archaic).  A program or
   part of a program which is not invoked explicitly, but that
   lies dormant waiting for some condition(s) to occur.

   At {MIT} they use "demon" for part of a program and "daemon"
   for an {operating system} process.

   Demons (parts of programs) are particularly common in {AI}
   programs.  For example, a {knowledge}-manipulation program
   might implement {inference rules} as demons.  Whenever a new
   piece of knowledge was added, various demons would activate
   (which demons depends on the particular piece of data) and
   would create additional pieces of knowledge by applying their
   respective inference rules to the original piece.  These new
   pieces could in turn activate more demons as the inferences
   filtered down through chains of logic.  Meanwhile, the main
   program could continue with whatever its primary task was.
   This is similar to the {triggers} used in {relational
   databases}.

   The use of this term may derive from "Maxwell's Demons" -
   minute beings which can reverse the normal flow of heat from a
   hot body to a cold body by only allowing fast moving molecules
   to go from the cold body to the hot one and slow molecules
   from hot to cold.  The solution to this apparent thermodynamic
   paradox is that the demons would require an external supply of
   energy to do their work and it is only in the absence of such
   a supply that heat must necessarily flow from hot to cold.

   Walt Bunch believes the term comes from the demons in Oliver
   Selfridge's paper "Pandemonium", MIT 1958, which was named
   after the capital of Hell in Milton's "Paradise Lost".
   Selfridge likened neural cells firing in response to input
   patterns to the chaos of millions of demons shrieking in
   Pandemonium.

   2. <company> {Demon Internet} Ltd.

   3. A {program generator} for {differential equation} problems.

   [N.W. Bennett, Australian AEC Research Establishment,
   AAEC/E142, Aug 1965].

   [{Jargon File}]

   (1998-09-04)
    
from Easton's 1897 Bible Dictionary
Demon
See {DAEMON}.
    
from Moby Thesaurus II by Grady Ward, 1.0
123 Moby Thesaurus words for "demon":
      Baba Yaga, Lilith, Mafioso, Satan, Young Turk, addict, afreet,
      ape-man, atua, barghest, beast, beldam, berserk, berserker, bomber,
      brute, bug, cacodemon, collector, daemon, daeva, damned spirits,
      demonkind, demons, denizens of hell, devil, devil incarnate,
      dragon, dybbuk, eager beaver, energumen, enthusiast, evil genius,
      evil spirit, evil spirits, faddist, fanatic, fiend,
      fiend from hell, fire-eater, firebrand, freak, fury, genie, genius,
      ghoul, goon, gorilla, great one for, gunsel, gyre, hardnose, harpy,
      hell-raiser, hellcat, hellhound, hellion, hellish host, hellkite,
      hobbyist, holy terror, hood, hoodlum, host of hell, hothead,
      hotspur, hound, incendiary, incubus, infatuate,
      inhabitants of Pandemonium, intelligence, jinni, jinniyeh, killer,
      lamia, lost souls, mad dog, madcap, monster, mugger, nut, ogre,
      ogress, powers of darkness, pursuer, rakshasa, rapist,
      revolutionary, rhapsodist, satan, savage, she-wolf, shedu,
      souls in hell, specter, spirit, spitfire, succubus, sucker for,
      supernatural being, termagant, terror, terrorist, the damned,
      the lost, the undead, tiger, tigress, tough, tough guy,
      ugly customer, vampire, violent, virago, visionary, vixen,
      werewolf, wild beast, witch, wolf, yogini, zealot

    
from Moby Thesaurus II by Grady Ward, 1.0
20 Moby Thesaurus words for "Demon":
      His Satanic Majesty, Lucifer, Satan, Satanas, the Adversary,
      the Arch-fiend, the Common Enemy, the Demon, the Devil,
      the Devil Incarnate, the Evil One, the Evil Spirit, the Fiend,
      the Foul Fiend, the Old Enemy, the Old Serpent, the Tempter,
      the Wicked One, the archenemy, the serpent

    

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