Medical Definition of NITRIFICATION. : the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates.See nitrification defined for kids.ADVERTISEMENT.edical Definition of NITRIFICATION. : the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates.
1. cladding-a protective covering that protects the outside of a building. facing. protective cover, protective covering, protection-a covering that is intend to protect from damage or injury; they had no protection from the fallout; wax provided protection for the floors.
This article is about clothing. For other uses of the term, see Padding (disambiguation). Padding is thin cushioned material sometimes added to clothes. It is often done in an attempt to soften impacts on certain zones of the body or enhance appearance by 'improving' a physical feature, often a sexually significant one. In fashion, there is padding for: Breasts â sometimes called falsies.