Definition
The outside air drawn into an engine's intake system to be mixed with fuel and burned in the cylinders. In a turbocharged engine, induction air is first compressed by the turbocharger before entering the intake manifold, increasing the mass of air available for combustion at altitude.
Plain English
The air that flows into the engine so it can burn fuel. In a turbocharged engine, this air is squeezed by the turbocharger before reaching the cylinders, so the engine still gets enough air even when flying high.
Context Anchor
Seen in engine operation and turbocharging discussions, especially when reading about how air enters the engine and how a turbocharger helps maintain engine power.
Derivation
From the Latin inducere, meaning 'to lead in.' Induction air is literally the air being led into the engine.
Why Pilots Care
Correct induction air pressure and temperature directly affect engine power and help avoid detonation.
Intuition Check
Do not think of “induction” here as an electrical effect or a formal ceremony. In this engine context, it simply means air being brought into the engine.
Example Sentence 1
On a turbocharged engine, the turbocharger compresses the induction air before it reaches the cylinders, restoring sea-level power at altitude.
Example Sentence 2
High induction air temperature can reduce engine power output.