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.
Key Concepts. 1  Melting is a process that causes a substance to change from a solid to a liquid. 2  Melting occurs when the molecules of a solid speed up enough that the motion overcomes the attractions so that the molecules can move past each other as a liquid.