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adj. Mathematics Formed by or having two plane faces; two-sided.

adj. Mathematics Relating to, having, or forming a dihedral angle.

n. Mathematics A dihedral angle.

n. Mathematics A dihedral group.

n. Aeronautics The upward or downward inclination of an aircraft wing from true horizontal.

n. An angle between two plane surfaces

n. The upward slope of an aircraft's wing

n. The angle between pairs of chemical bonds separated by a third bond

adj. Consisting of, relating to or contained between two plane surfaces.

adj. Having two plane faces.

adj. Of a kite or an aëroplane, having wings that make with one another a dihedral angle, esp. when the angle between the upper sides is less than 180°.

adj. Of wing pairs, inclined at an upward angle to each other.

Having two sides, as a figure; having two plane faces, as a crystal.

n. In geometry, a pair of consecutive faces of an angloid.

"Swedish manufacturer Koenigsegg is also taking door design to a new level with what it calls the dihedral synchro-helix actuation system."

anhedral   

dihedral angle   

two-place    tri-motored    single-engine    mid-mounted    all-steel    untapered    Abelian    forty-five-degree    turboprop    swept-back