de‑nitrogenation

n.the process of removing nitrogen from a substance or environment; (medicine) the removal of nitrogen from the body, especially to prevent decompression sickness; (chemistry) the industrial process of removing nitrogen compounds from materials; The process of removing nitrogen or nitrogen compounds from a substance, mixture, or environment; Chemical or industrial process of eliminating nitrogen from gases, liquids, or solid materials; Method used in food processing or metallurgy to reduce nitrogen content