(computer science) a copy of a file or directory on a separate storage device; "he made a backup in case the original was accidentally damaged or erased"
an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet"
(music) playing in a different key from the key intended; moving the pitch of a piece of music upwards or downwards
the act of reversing the order or place of
(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"
(mathematics) the transfer of a quantity from one side of an equation to the other along with a change of sign
(genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosome