rearrangement

noun

Etymology: From re- + arrangement or rearrange + -ment.

1. The process of rearranging.

   “They form part of the vast electrification and reconstruction schemes which have been in hand for a number of years at Liverpool Street, and in suburban Essex, and include the rearrangement of tracks, of which the Ilford flyover forms part; the modern signal boxes, now needed only at key points; the electric control or sub-stations; and a large electric car shed.”

2. A rearrangement reaction.