metamorphoses [met-uh-mawr-fuh-seez] 1.Biology. a profound change in form from onestage to the next in the life history of an organism.2. a complete change of form, structure, orsubstance, as transformation by magic orwitchcraft.3. any complete change in appearance, character,circumstances, etc.4.a form resulting from any such change.5.Pathology. a type of alteration or degeneration in whichtissues are changed:fatty metamorphosis of the liver. the resultant form. 6.Botany. the structural or functional modificationof a plant organ or structure during itsdevelopment.