14-Letter Words Containing: _,_,A,H,K,O

• 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

• photosynthetic or plant constituent of plankton; mainly unicellular algae

• literally, the contemplation of one's navel, which is an idiom usually meaning complacent self-absorption

• literally, the contemplation of one's navel, which is an idiom usually meaning complacent self-absorption

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