n.
- A complete change; a transformation.
- The act of altering a given set of objects in a group.
- Mathematics. A rearrangement of the elements of a set.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.