Definition of affination in English:

affination

noun

  • 1Metallurgy. The process of refining (precious) metal, especially by treatment with hot concentrated sulphuric acid.

  • 2The initial process in the refining of sugar whereby raw sugar crystals are treated with a warm syrup to remove the thin layer of molasses.

Origin

Mid 19th century. From affine + -ation.

Pronunciation

affination

/ˌafɪˈneɪʃn/