Transformation is the genetic alteration of a cell resulting from the introduction, uptake and expression of foreign DNA.
Transformation is also the process by which normal cells are converted into cells that will continue to divide without limit. Normal cells can divide only a certain number of times before they will stop dividing. Cells that have been transformed no longer have such a limit (for example, cancer cells) are able to grow and divide potentially forever.
In the terms of military operations, transformation is the process of transitioning to a lightweight, fast-moving force that heavily utilizes network-centric warfare. [1]
In post-apartheidSouth Africa, transformation has come to mean the processes by which the previously disenfanchised (predominantly black) majority are brought into the mainstream of public and business life. Legislation and public policy make black economic empowerment a key aspect of most equity-related business deals or government contracts.
In anime, a naked transformation might be used my magical girls to change from their "normal" to "magical" forms, although typically they will be partially obscured for purposes of censorship in order to maintain an equivalent to PG rating. The purpose of this is simply as an act of pure fanservice.