annealing
PR: /əˈniːlɪŋ/
IT: A form of heat treatment applied to a metal to soften it, relieve internal stresses and instabilities, and make it easier to work or machine. It consists of heating the metal to a specified temperature for a specified time, both of which depend on the metal involved, and then allowing it to cool slowly. It is applied to both ferrous and nonferrous metals and a similar process can be applied to other materials, such as glass.
DEF: a substance that is found in DNA and RNA.
(Definition from the Oxford Reference)
