transposition

noun

1. any abnormal position of the organs of the body
2. an event in which one thing is substituted for another"the replacement of lost blood by a transfusion of donor blood"
3. (genetics) a kind of mutation in which a chromosomal segment is transferred to a new position on the same or another chromosome
4. (mathematics) the transfer of a quantity from one side of an equation to the other along with a change of sign
5. (electricity) a rearrangement of the relative positions of power lines in order to minimize the effects of mutual capacitance and inductance"he wrote a textbook on the electrical effects of transposition"
6. the act of reversing the order or place of
7. (music) playing in a different key from the key intended; moving the pitch of a piece of music upwards or downwards