Noun
hydrogenolysis (countable and uncountable, plural hydrogenolyses)
(chemistry) the cleavage of a molecule, especially that of a carbon-carbon bond, with the addition of hydrogen atoms to the fragments
For instance, in hydrogenation operations, large planes of metal surface function as sites of hydrogenolysis catalysis while sites catalyzing hydrogenation of unsaturates are smaller. Source: Internet
Hydrodeoxygenated biodiesel is produced by direct hydrogenolysis of the fat into alkanes and propane. Source: Internet