1. plural of dihedral; geometric figures formed by two intersecting planes, or the angles between them
Usage: mathematics; geometry
2. upward-angled wing configurations on aircraft where the wings form a V-shape when viewed from the front
Usage: aviation; aeronautics

Examples

• The geometry student calculated the angles of several dihedrals in the problem set.
• Dihedrals are important concepts when studying three-dimensional shapes.
• The aircraft’s dihedrals provided greater stability during flight.
• Engineers adjusted the wing dihedrals to improve the plane’s handling characteristics.
• The textbook explained how to measure dihedrals using protractors and rulers.
• Modern fighter jets often have complex dihedrals in their wing designs.