transposition

Etymology

From Middle French transposition, from Medieval Latin transpositio.

noun

1. (especially mathematics) The act or process of transposing or interchanging.
2. (music) A shift of a piece of music to a different musical key by adjusting all the notes of the work equally either up or down in pitch.
3. (chess) A sequence of moves resulting in a position that may also be reached by another, more common sequence.
4. (European Union) A incorporation of the provisions of a European Union directive into a Member State's domestic law.

verb

1. To transpose
2. (psychiatry) To take on the role of another person