You searched for: “heterodermatous
heterodermatous (adjective), more heterodermatous, most heterodermatous
Pertaining to the skin or integument (outer covering or coat) of different structures in different parts of the body): The students in Mr. Snake's class learned about the heterodermatous sections of the skin of certain fishes and serpents.

Heterodermatous parts of a body are opposite to the "homodermatous" parts of a body.