dermatologist(n.) One who discourses on the skin and its diseases; one versed in dermatology; especially, a physician with specialized training in dermatology, licensed to practise as a specialist in treating diseases of the skin.
Melting Point: Everyday and Scientific Definitions. Now that we know something about phase diagrams, it will make more sense why scientists define melting point the way they do. First, in everyday terms, the melting point is the temperature at which a substance melts or freezes.
No amorphous polymer can exhibit a melting point as melting is a first-order phase transition characteristic of crystalline substances or, for instance, a crystalline phase of semicrystalline polymers.