"Hydrogenise" Natural Recordings by Native Speakers
Hydrogenise is a verb that means to convert (a substance) into a compound with hydrogen, especially water, by reaction with hydrogen. It can also refer to the process of replacing the hydrogen atoms in a molecule or compound with another hydrogen-containing group.
Hydrogenate means to combine hydrogen molecules with another substance, usually in a chemical reaction, such as hydrogenating vegetable oils to make them more solid and spreadable, like margarine. Or, in a broader sense, it can also refer to the process of replacing existing hydrogen atoms in a molecule with additional hydrogen atoms, often to change its properties or make it more reactive.