Adjective: dihedral dI'hee-drul
- Having two plane faces
"the dihedral summit of the crystal reflected the light beautifully"
- (aeronautics) having wings that form an upward angle with the horizontal plane
"the dihedral design of the aircraft's wings enhances aerodynamic stability"
- (mathematics) relating to the angle between two planes
"the dihedral angle in this molecule affects its reactivity"
Encyclopedia: Dihedral