ˌmɛtəˈmɔːˌfəʊz ˌmɛɾəˈmɔɹˌfoʊz tɹænsˈfɔːm tɹænsˈfɔɹm tɹɑːnzˈleɪt tɹænzˈleɪt ˈtɹɛnzlæet change in outward structure or looks He transformed into a monster The salesman metamorphosed into an ugly beetle increase or decrease (an alternating current or voltage) change (a bacterial cell) into a genetically distinct cell by the introduction of DNA from another cell of the same or closely related species convert (one form of energy) to another transform energy to light change or alter in form, appearance, or nature This experience transformed her completely She transformed the clay into a beautiful sculpture transubstantiate one element into another change from one form or medium into another Braque translated collage into oil subject to a mathematical transformation