Definition
A shape designed so that air flows around it smoothly, producing the least possible drag and, where applicable, generating useful lift. Typical aerodynamic shapes are rounded at the front, taper to a point or thin edge at the rear, and have smooth, continuous surfaces.
Plain English
A shape that lets air slide past it easily without breaking up into messy, draggy airflow.
Context Anchor
You will see this term in discussions of aircraft design, wing shape, fairings, cowlings, and anything added to an aircraft that affects airflow.
Derivation
From Greek 'aer' (air) and 'dynamis' (power or force). 'Aerodynamic' literally refers to the forces produced by air in motion, so an aerodynamic shape is one designed with those forces in mind.
Why Pilots Care
An efficient aerodynamic shape reduces fuel burn, increases speed and range, and improves handling qualities.
Analogy
A smooth bicycle helmet moves through the air more easily than a flat board. The smoother shape does not remove air resistance completely, but it reduces how much the air pushes back.
Intuition Check
Do not assume aerodynamic means simply “curved” or “sleek-looking.” An aerodynamic shape is one that actually helps airflow behave smoothly and reduces unwanted air resistance.
Example Sentence 1
The wing's aerodynamic shape produces lift while keeping drag low across the normal range of flight speeds.
Example Sentence 2
Mechanics installed new fairings to restore the fuselage's aerodynamic shape after the dent repair.