• (n.) The act or process of reducing from the state of an oxide.
(de-ok″sĭ-da´shәn) the removal of oxygen from a chemical compound.
De·ox`i·da'tion noun (Chemistry) The act or process of reducing from the state of an oxide. 
Type: Term Pronunciation: dē′oks-i-dā′shŭn Definitions: 1. Process of depriving a chemical compound of its oxygen.
deoxidation Depriving a chemical compound of its oxygen.
(1) Removal of oxygen from molten metals by use of suitable chemical agents. (2) Sometimes refers to removal of undesirable elements other than oxygen by the introduction of elements or compounds that readily react with them.
process to remove or tie up oxygen molecules in molten steel production
Removal of excess oxygen from molten metal, usually accomplished by adding materials with a high affinity for oxygen, the oxides of which are either gaseous or readily form slags.