Definition
The upward force generated by an airfoil as air flows around it, produced by the pressure difference between the lower-pressure air above the wing and the higher-pressure air below. Lift acts perpendicular to the relative wind and is what allows an aircraft to leave the ground and stay airborne.
Plain English
The upward push a wing creates as it moves through the air. It happens because air moving over the top of the wing has lower pressure than the air underneath, and that pressure difference pushes the wing up.
Context Anchor
Seen when studying how wings support the aircraft, especially in takeoff, landing, turning, and loss-of-lift discussions.
Derivation
From Greek 'aero-' meaning air and Greek 'dynamis' meaning power or force — so 'aerodynamic' literally means 'force from moving air.' 'Lift' is the plain English word for an upward push. Together: the upward force produced by air in motion.
Why Pilots Care
Lift must overcome weight for sustained flight; understanding how it is generated and lost is essential for safe takeoff, climb, cruise, and stall recovery.
Grounding Statement
Hold your hand flat out the window of a moving car and tilt the leading edge slightly up — you can feel your hand being pushed upward. That upward push is aerodynamic lift.
Intuition Check
Lift does not simply mean straight up. In aerodynamics, lift acts at right angles to the oncoming airflow, so its direction can tilt when the airplane banks.
Example Sentence 1
As the aircraft accelerated down the runway, the wings produced enough aerodynamic lift to overcome its weight and the airplane began to climb.
Example Sentence 2
At very low airspeeds the wing can no longer produce enough aerodynamic lift to support the airplane.