(TM)

from Jargon File (4.4.4, 14 Aug 2003)

(TM)
 //

   [Usenet] ASCII rendition of the (TM) appended to phrases that the
   author feels should be recorded for posterity, perhaps in future
   editions of this lexicon. Sometimes used ironically as a form of
   protest against the recent spate of software and algorithm patents and
   look and feel lawsuits. See also {UN*X}.

from The Free On-line Dictionary of Computing (8 July 2008)

(TM)

   (Trademark) An {ASCII} rendition of the trademark-superscript
   symbol, appended to phrases that the author feels should be
   recorded for posterity.

   It is sometimes used ironically as a form of protest against
   the recent spate of {software patents}, {algorithm} patents
   and "{look and feel}" lawsuits.

   [{Jargon File}]

   (1994-12-02)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       TeleMail (BBS, Berlin, Germany, telecommunication)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       Terminal Manager (Bull, DSA)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       Tools for MIME (EMACS, GNU, MIME)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       Traffic Management

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       TradeMark

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       Transaction Monitor (TP)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

TM
       Turing Machine