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6 definitions found
 for T
From The Collaborative International Dictionary of English v.0.48 :

  Mute \Mute\, n.
     1. One who does not speak, whether from physical inability,
        unwillingness, or other cause. Specifically:
        (a) One who, from deafness, either congenital or from
            early life, is unable to use articulate language; a
            deaf-mute.
        (b) A person employed by undertakers at a funeral.
        (c) A person whose part in a play does not require him to
            speak.
        (d) Among the Turks, an officer or attendant who is
            selected for his place because he can not speak.
            [1913 Webster]
  
     2. (Phon.) A letter which represents no sound; a silent
        letter; also, a close articulation; an element of speech
        formed by a position of the mouth organs which stops the
        passage of the breath; as, p, b, d, k, t.
        [1913 Webster]
  
     3. (Mus.) A little utensil made of brass, ivory, or other
        material, so formed that it can be fixed in an erect
        position on the bridge of a violin, or similar instrument,
        in order to deaden or soften the tone.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  T \T\ (t[=e]),
     the twentieth letter of the English alphabet, is a nonvocal
     consonant. With the letter h it forms the digraph th, which
     has two distinct sounds, as in thin, then. See Guide to
     Pronunciation, [sect][sect]262-264, and also [sect][sect]153,
     156, 169, 172, 176, 178-180.
     [1913 Webster] The letter derives its name and form from the
     Latin, the form of the Latin letter being further derived
     through the Greek from the Ph[oe]nician. The ultimate origin
     is probably Egyptian. It is etymologically most nearly
     related to d, s, th; as in tug, duke; two, dual, L. duo;
     resin, L. resina, Gr. "rhti`nh, tent, tense, a., tenuous,
     thin; nostril, thrill. See D, S.
     [1913 Webster]
  
     T bandage (Surg.), a bandage shaped like the letter T, and
        used principally for application to the groin, or
        perineum.
  
     T cart, a kind of fashionable two seated wagon for pleasure
        driving.
  
     T iron.
     (a) A rod with a short crosspiece at the end, -- used as a
         hook.
     (b) Iron in bars, having a cross section formed like the
         letter T, -- used in structures.
  
     T rail, a kind of rail for railroad tracks, having no
        flange at the bottom so that a section resembles the
        letter T.
  
     T square, a ruler having a crosspiece or head at one end,
        for the purpose of making parallel lines; -- so called
        from its shape. It is laid on a drawing board and guided
        by the crosspiece, which is pressed against the straight
        edge of the board. Sometimes the head is arranged to be
        set at different angles.
  
     To a T, exactly, perfectly; as, to suit to a T. [Colloq.]
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  T
      n 1: a base found in DNA (but not in RNA) and derived from
           pyrimidine; pairs with adenine [syn: thymine, T]
      2: one of the four nucleotides used in building DNA; all four
         nucleotides have a common phosphate group and a sugar
         (ribose) [syn: deoxythymidine monophosphate, T]
      3: a unit of weight equivalent to 1000 kilograms [syn: metric
         ton, MT, tonne, t]
      4: the 20th letter of the Roman alphabet [syn: T, t]
      5: thyroid hormone similar to thyroxine but with one less iodine
         atom per molecule and produced in smaller quantity; exerts
         the same biological effects as thyroxine but is more potent
         and briefer [syn: triiodothyronine, liothyronine, T]
      6: hormone produced by the thyroid glands to regulate metabolism
         by controlling the rate of oxidation in cells; "thyroxine is
         65% iodine" [syn: thyroxine, thyroxin,
         tetraiodothyronine, T]

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  T
   /T/
  
      1. [from LISP terminology for ?true?] Yes. Used in reply to a question
      (particularly one asked using The -P convention). In LISP, the constant T
      means ?true?, among other things. Some Lisp hackers use ?T? and ?NIL?
      instead of ?Yes? and ?No? almost reflexively. This sometimes causes
      misunderstandings. When a waiter or flight attendant asks whether a hacker
      wants coffee, he may absently respond ?T?, meaning that he wants coffee;
      but of course he will be brought a cup of tea instead. Fortunately, most
      hackers (particularly those who frequent Chinese restaurants) like tea at
      least as well as coffee ? so it is not that big a problem.
  
      2. See time T (also since time T equals minus infinity).
  
      3. [techspeak] In transaction-processing circles, an abbreviation for the
      noun ?transaction?.
  
      4. [Purdue] Alternate spelling of tee.
  
      5. A dialect of LISP developed at Yale. (There is an intended allusion to
      NIL, ?New Implementation of Lisp?, another dialect of Lisp developed for
      the VAX)
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  T
  T Lisp
  
     1. True.  A Lisp compiler by Johnathan A. Rees in 1982 at
     Yale University.  T has static scope and is a
     near-superset of Scheme.  Unix source is available.  T is
     written in itself and compiles to efficient native code.  Used
     as the basis for the Yale Haskell system.  Maintained by
     David Kranz .
  
     ftp://ftp.ai.mit.edu/pub/systems/t3.1)">(ftp://ftp.ai.mit.edu/pub/systems/t3.1).
  
     A multiprocessing version of T is available
     ftp://masala.lcs.mit.edu/pub/mult)">(ftp://masala.lcs.mit.edu/pub/mult).
  
     Runs on Decstation, SPARC, Sun-3, Vax under Unix,
     Encore, HP, Apollo, Macintosh under A/UX.
  
     E-mail:  (bugs).
     E-mail: .
  
     (1991-11-26)
  
     ["The T Manual", Johnathan A. Rees  et
     al, Yale U, 1984].
  
     2. A functional language.
  
     ["T: A Simple Reduction Language Based on Combinatory Term
     Rewriting", Ida et al, Proc of Prog Future Generation
     Computers, 1988].
  
     3. (lower case) The Lisp atom used to represent "true",
     among other things.  "false" is represented using the same
     atom as an empty list, nil.  This overloading of the basic
     constants of the language helps to make Lisp write-only
     code.
  
     4. In transaction-processing circles, an abbreviation for
     "transaction".
  
     5. (Purdue) An alternative spelling of "{tee".
  

From The Devil's Dictionary (1881-1906) :

  T, the twentieth letter of the English alphabet, was by the Greeks
  absurdly called _tau_.  In the alphabet whence ours comes it had the
  form of the rude corkscrew of the period, and when it stood alone
  (which was more than the Phoenicians could always do) signified
  _Tallegal_, translated by the learned Dr. Brownrigg, "tanglefoot."
  

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