transformation
trans.for.ma.tion \.tran(t)s-f*r-'ma--sh*n, -.fo.r-\ n 1: an act, process, or instance of transforming or being transformed 2: false hair esp. worn by a woman 3a: the operation of changing (as by rotation or mapping) one configuration or expression into another in accordance with a mathematical rule 3b: the formula that effects such a change