Plain English Meaning

Lift is the upward force a wing creates as it moves through the air. It is what holds the airplane up.

Full Definition

The aerodynamic force produced by a wing or other airfoil acting perpendicular to the relative wind. Lift is generated when air flowing over and under the airfoil creates a pressure difference, with lower pressure above the wing and higher pressure below. It is the force that opposes weight and supports the aircraft in flight.

Context Anchor

You will see this term in basic flight theory, takeoff and landing discussions, discussions, and explanations.