1. (of an insect or amphibian) undergo metamorphosis, especially into the adult form: "feed the larvae to your fish before they metamorphose into adults"
▪ change or cause to change completely in form or nature: "a father seeing his daughter metamorphosing from girl into woman"
▪ subject (rock) to metamorphism:"the extreme heat metamorphosed the sandstone, baking it white and producing a quartzite rock"
Word Originlate 16th century: from French métamorphoser, from métamorphose (see metamorphosis).