In dictionaries:
auxiliary power unit
Secondary source for aircraft power.
Systems for Nuclear Auxiliary Power
The Systems Nuclear Auxiliary POWER program was a program of experimental radioisotope thermoelectric generators (RTGs) and space nuclear reactors flown during the 1960s by NASA.
Automobile auxiliary power outlet
An automobile auxiliary power outlet (also known as car cigarette lighter or auxiliary power outlet) in an automobile was initially designed to power an electrically heated cigarette lighter,LifeWire.com article: “From Car Cigarette Lighter To 12V Accessory Socket” but became a de facto standard DC connector to supply electrical power for portable accessories used in or near an automobile directly from the vehicle's electrical system.
Honeywell auxiliary power unit
Honeywell auxiliary power units are a series of gas turbine auxiliary power units made by Honeywell Aerospace.
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