metamorphose UK /ˌmɛtəˈmɔːˌfəʊz/US /ˌmɛtəˈmɔɹˌfoʊz/ verb3 •Of a moth or insect, to undergo metamorphosis. •To undergo some transformation. •To transform (something) so that it has a completely different appearance. formsmetamorphosed · metamorphosing · metamorphoses