13-Letter Words Containing: G,R,O,A,K

• 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

• a productive insight

• making an important discovery

• a penetration of a barrier such as an enemy's defense

• the execution of low priority programs while higher priority programs are not using the processing system

• trespassing for an unlawful purpose; illegal entrance into premises with criminal intent

• the activity of making things out of metal in a skillful manner

• a press conference or interview in which a government official explains to reporters the background of an action or policy