Pronunciation: (an"u-môr'fu-sis, -môr-fō'sis),[key] —n., —pl.-sesPronunciation: (-sēz", -sēz).[key] 1. a drawing presenting a distorted image that appears in natural form under certain conditions, as when viewed at a raking angle or reflected from a curved mirror.
2. the method of producing such a drawing.
3. Zool.,Entomol.the gradual change in form from one type to another during the evolution of a group of organisms.
4. (in certain arthropods) metamorphosis in which body parts or segments are added to those already present.