dihedral

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dihedral

1. having or formed by two intersecting planes; two-sided
2. the figure formed by two intersecting planes
3. the upward inclination of an aircraft wing in relation to the lateral axis

dihedral

[dī′hē·drəl]
(aerospace engineering)
The upward or downward inclination of an airplane's wing or other supporting surface in respect to the horizontal; in some contexts, the upward inclination only.
(mathematics)
References in periodicals archive ?
These components include the sky horn, reference horn, internal reference load, dihedral mirrors, collimator, and the detector itself.
The idea of approximating the thermal behavior of the dihedral mirrors, collimator, and detectors with Planck functions, as Fixsen describes [38], does not rest on solid grounds.
Photo: Rising abruptly from the high desert,Smith Rock draws hikers and serious climbers--like the fellow at left, on belay as he straddles a chalk-smeared chimney in the Dihedrals area