hydrodesulfurization

or hy·dro·de·sul·phur·i·za·tion

[ hahy-droh-dee-suhl-fyer-uh-zey-shuh n, -fer-uh- ]
/ ˌhaɪ droʊ diˌsʌl fyər əˈzeɪ ʃən, -fər ə- /

noun

desulfurization by catalytic agents of the sulfur-rich hydrocarbons obtained from petroleum or the like during cracking or hydrocracking.
Also especially British, hydrodesulphurisation.

Origin of hydrodesulfurization

First recorded in 1945–50; hydro-2 + desulfurization