desulphurizePronunciation: /diːˈsʌlfərʌɪz/ (also desulphurise, US desulfurize)Definition of desulphurize verb [with object] remove sulphur or sulphur compounds from (a substance): equipment to desulphurize coal in power plantsDerivatives desulphurization noun desulphurizer noun desulphurize in other Oxford dictionaries Definition of desulphurize in the US English dictionary