What is "halogenation"

n. (context chemistry English) The reaction of a halogen with something, especially the replacement of a hydrogen atom of an organic compound with a halogen one.

Halogenation is a chemical reaction that involves the addition of one or more halogens to a compound or material. Dehalogenation is the reverse of halogenation and results in the removal of a halogen from a molecule. The pathway and stoichiometry of halogenation depends on the structural features and functional groups of the organic substrate, as well as on the specific halogen. Inorganic compounds such as metals also undergo halogenation.