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A process by which the hydrocarbon molecules of petroleum are broken into simpler molecules, as of gasoline or kerosene, by the addition of hydrogen under high pressure and in the presence of a catalyst.

hy′dro·crack′ v.
hy′dro·crack′er n.


vb (tr)
(Chemistry) to break down petroleum into simpler molecules in order to maximize the production of fuels
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References in periodicals archive ?
Further, the segmentation of the market is divided by types, such as solvent extracted and hydrocrack paraffinic oil.
Hydrocracked base oils, by virtually eliminating sulphur, nitrogen, aromatic and other polar compounds, deliver extremely stable performance [4].
In many regions of the world, especially in Europe, there is a general trend toward the use of hydrocracked oil type functional fluids.