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Meaning of Diheral


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  • (mathematics) an angle between two plane surfaces
  • (aeronautics) the upward slope of an aircraft's wing
- The Nuttall Encyclopedia



Di*he"dral (?), a. 1. 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°.

2. (Aëronautics) Of wing pairs, inclined at an upward angle to each other.

Di*he"dral (?), a. [Gr. di- = di`s- twice + &?; a seat, bottom, base, fr. &?; to sit. Cf. Diedral.] Having two plane faces; as, the dihedral summit of a crystal.

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.

Di*he"dral (?), a. 1. 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°.

2. (Aëronautics) Of wing pairs, inclined at an upward angle to each other.

- Webster's Unabridged Dictionary (1913)



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The correct spelling of this word ought to be: Dihedral

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