1) Benficiate 2) Deoxidise 1) Change 2) Deoxidise 3) Reduce 
• (v. t.) To deprive of oxygen; to reduce from the state of an oxide.
De·ox'i·dize transitive verb (Chemistry) To deprive of oxygen; to reduce from the state of an oxide. 
Type: Term Pronunciation: dē-oks′i-dīz Definitions: 1. To remove oxygen from its chemical combination.
[v] - remove oxygen from a compound, in chemistry
deoxidize To remove oxygen from its chemical combination.
deoxidise verb to remove oxygen from a compound, or cause to react with hydrogen or form a hydride, or to undergo an increase in the number of electrons
Removal of oxygen from steel.
to remove oxygen from, esp. by reducing an oxide.