Source : Webster's Revised Unabridged Dictionary (1913)

Transpose \Trans*pose"\, v. t. [imp. & p. p. {Transposed}; p.
   pr. & vb. n. {Transposing}.] [F. transposer; pref. trans- (L.
   trans across) + poser to put. See {Pose}.]
   1. To change the place or order of; to substitute one for the
      other of; to exchange, in respect of position; as, to
      transpose letters, words, or propositions.

   2. To change; to transform; to invert. [R.]

            Things base and vile, holding no quantity, Love can
            transpose to form and dignity.        --Shak.

   3. (Alg.) To bring, as any term of an equation, from one side
      over to the other, without destroying the equation; thus,
      if a + b = c, and we make a = c - b, then b is said to be
      transposed.

   4. (Gram.) To change the natural order of, as words.

   5. (Mus.) To change the key of.

Source : WordNet®

transpose
     n : a matrix formed by interchanging the rows and columns of a
         given matrix
     v 1: change the order or arrangement of; "Dyslexics often
          transpose letters in a word" [syn: {permute}, {commute}]
     2: transfer from one place or period to another; "The ancient
        Greek story was transplanted into Modern America" [syn: {transfer},
         {transplant}]
     3: cause to change places; "interchange this screw for one of a
        smaller size" [syn: {counterchange}, {interchange}]
     4: transfer a quantity from one side of an equation to the
        other side reversing its sign, in order to maintain
        equality
     5: put (a piece of music) into another key
     6: transpose and remain equal in value; "These operators
        commute with each other" [syn: {commute}]
     7: change key; "Can you transpose this fugue into G major?"