from the GNU version of the Collaborative International Dictionary of English
- adj. Designating an internal-combustion engine of a type resembling the Diesel engine in using as fuel heavy oil which is injected in a spray just before the end of the compression stroke and is fired without electrical ignition. The fuel is sprayed into an iron box (called a hot bulb or hot pot) opening into the combustion chamber, and heated for ignition by a blast-lamp until the engine is running, when it is, ordinarily, kept red hot by the heat of combustion.
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"Today's financial structure needs a radical change," said new Secretary of the Treasury Philippe de La Fou, whose face is a Bolinder semi-diesel hot bulb engine.