(n): an abnormal physical condition resulting from defective genes or developmental deficiencies
(n): an event in which one thing is substituted for another
(n): an instance of change; the rate or magnitude of change
(n): (genetics) a kind of mutation in which a chromosomal segment is transfered to a new position on the same or another chromosome
(n): (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism
(n): (mathematics) the transfer of a quantity from one side of an equation to the other along with a change of sign
(n): the procedure of calculating; determining something by mathematical or logical methods
(n): (electricity) a rearrangement of the relative positions of power lines in order to minimize the effects of mutual capacitance and inductance
(n): changing an arrangement
(n): the act of reversing the order or place of
(n): a rearrangement in a different order
(n): (music) playing in a different key from the key intended; moving the pitch of a piece of music upwards or downwards
(n): the act of playing a musical instrument
In wordplay, rearranging letters to form another word: e.g., sheet --> these.
--Chris Cole, Wordplay