1. the shape or outline of an object as viewed from above, especially of an aircraft wing or other aerodynamic surface
Usage: technical; aviation

Examples

• The delta planform of the fighter jet’s wings provides excellent high-speed performance.
• Engineers studied the planform of the new wing design in the wind tunnel.
• The aircraft’s swept planform reduces drag at supersonic speeds.
• Different planform shapes affect lift and stability characteristics.
• The rectangular planform is common in training aircraft wings.
• Designers modified the planform to improve fuel efficiency.