14-Letter Words Containing: S,K,Y

• the process whereby hydrocarbon molecules of petroleum are broken down into kerosene and gasolene by the addition of hydrogen under high pressure in the presence of a catalyst

• a large bone marrow cell; regarded as the source of blood platelets

• photosynthetic or plant constituent of plankton; mainly unicellular algae

• Excess keratin formation on the skin surface, as can be seen in a number of dermatologic conditions.