Plain English Meaning
The study of how air behaves around a moving object, and how that air creates the forces that let an airplane fly and be controlled.
Full Definition
The branch of physics that studies the motion of air and the forces produced when a solid object, such as an airplane, moves through it. In aviation, aerodynamics explains how lift, weight, thrust, and drag interact to make controlled flight possible.
Context Anchor
You will see this term when learning why an airplane flies, how the wings work, and how control inputs change the airplane’s motion.
Derivation
From the Greek 'aero' (air) and 'dynamics' (forces in motion). So literally, 'the forces of air in motion.' That is exactly what a pilot is working with every time the airplane moves.