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.
One of the houses has been stone-clad. Stone cladding is a thin layer of real or simulated stone applied to a building or other structure made of a material other than stone. Stone cladding is sometimes applied to concrete and steel buildings as part of their original architectural design. Stone cladding often refers to lightweight simulated stone products with a concrete-type base.