Dihedral angle
Dihedral Di*he"dral, a. [Gr. di- = di`s- twice + ? a seat, bottom, base, fr. ? to sit. Cf. {Diedral}.] 1. Having two plane faces; as, the dihedral summit of a crystal. [1913 Webster]

2. Of a kite or an a["e]roplane, having wings that make with one another a dihedral angle, esp. when the angle between the upper sides is less than 180[deg]. [Webster 1913 Suppl.]

3. (A["e]ronautics) Of wing pairs, inclined at an upward angle to each other. [Webster 1913 Suppl.]

{Dihedral angle}, the angular space contained between planes which intersect. It is measured by the angle made by any two lines at right angles to the two planes. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

### Look at other dictionaries:

• Dihedral Angle — Angle diédral En géométrie, l angle entre 2 plans est appelé angle diédral ou angle dièdre. L angle diédral d un tétraèdre régulier, correspond à l angle observé au sol, dans un plan perpendiculaire à l une des arêtes au sol, que font la base du… …   Wikipédia en Français

• Dihedral angle — In aerospace engineering, the dihedral is the angle between the two wings; see Dihedral (aircraft). In geometry, a dihedral or torsion angle is the angle between two planes. Figure 1: Dihedral angle of three vectors, defined as an exterior… …   Wikipedia

• dihedral angle — noun 1. : the angle between two intersecting planes 2. : dihedral II 2 * * * Geom. 1. the angle between two planes in a dihedron. 2. dihedron. [1820 30] * * * dihedral angle noun The angle made by the wing of an aeroplane wi …   Useful english dictionary

• dihedral angle — dvisienis kampas statusas T sritis chemija apibrėžtis Kampas tarp plokštumų, kertančių du bendrus atomus ir du ryšius prie skirtingų atomų. atitikmenys: angl. dihedral angle; torsion angle; torsional angle rus. двугранный угол; торсионный угол …   Chemijos terminų aiškinamasis žodynas

• dihedral angle — Geom. 1. the angle between two planes in a dihedron. 2. dihedron. [1820 30] * * * …   Universalium

• dihedral angle — noun The angle between two planes …   Wiktionary

• dihedral angle — dihe′dral an′gle n. math. the angle between two planes in a dihedron …   From formal English to slang

• dihedral angle — noun Etymology: di + hedral Date: 1826 a figure formed by two intersecting planes …   New Collegiate Dictionary

• Dihedral — or polyhedral may refer to: Dihedral angle, the angle between two mathematical planes Dihedral (aircraft), the upward angle of a fixed wing aircraft s wings where they meet at the fuselage, dihedral effect of an aircraft, longitudinal dihedral… …   Wikipedia

• Dihedral (disambiguation) — Dihedral may refer to: *Dihedral the angle of a fixed wing aircraft s wings *Dihedral angle, is the angle between two planes, in geometry *Dihedral group, is the group of symmetries of the n sided polygon in abstract algebra **Also Dihedral… …   Wikipedia