Definition
A method of increasing engine power by using an engine-driven air compressor to force more air into the cylinders than they would draw in naturally, allowing more fuel to be burned and maintaining sea-level power at higher altitudes where the air is thinner.
Plain English
A pump driven by the engine itself squeezes extra air into the cylinders so the engine can keep making strong power even as the airplane climbs into thinner air.
Context Anchor
Seen in performance discussions about engine power, altitude, climb, and range in airplanes equipped with supercharged engines.
Derivation
From the Latin 'super' meaning 'above' or 'beyond,' combined with 'charge,' which in engine language means filling a cylinder with the air-fuel mixture. So 'supercharging' literally means filling the cylinder beyond what it would naturally take in.
Why Pilots Care
Supercharging lets the engine keep producing rated power as altitude increases and air density drops, directly affecting climb capability and range.
Analogy
It is like helping a campfire burn stronger by blowing more air into it. The engine still needs fuel, but the extra air helps it keep producing power where the air outside is thin.
Intuition Check
Supercharging is not electrical charging. It means pressure-charging the engine with extra air, not charging a battery.
Example Sentence 1
Because the aircraft was supercharged, the pilot was able to maintain full rated power well above the altitude where a normally aspirated engine would have started losing performance.
Example Sentence 2
Supercharging allowed the aircraft to maintain cruise power well above the altitude where normally aspirated engines would lose performance.