Dihedral
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 — 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 — [dī hē′drəl] adj. [< DI 1 + Gr hedra, a seat, base + AL] 1. having or formed by two intersecting plane faces [a dihedral angle] 2. a) having wings that form a dihedral angle with each other, as some airplanes b) …   English World dictionary

  • dihedral — ► ADJECTIVE ▪ having or contained by two plane faces. ► NOUN 1) an angle formed by two plane faces. 2) Aeronautics upward inclination of an aircraft s wing …   English terms dictionary

  • dihedral — i. The positive acute angle between the lateral axis of an airplane and a line through the center of a wing or horizontal stabilizer. A dihedral is normally associated with a low wing aircraft, although some dihedral angles may be incorporated… …   Aviation dictionary

  • dihedral — /daɪˈhidrəl/ (say duy heedruhl) –adjective Mathematics 1. having, or formed by, two planes: a dihedral angle. 2. relating to or having a dihedral angle or angles. 3. (of an aircraft) having the wings sloping, especially upwards. Compare anhedral …   Australian English dictionary

  • dihedral — adj. & n. adj. having or contained by two plane faces. n. = dihedral angle. Phrases and idioms: dihedral angle an angle formed by two plane surfaces, esp. by an aircraft wing with the horizontal. Etymology: dihedron f. DI (1) + HEDRON …   Useful english dictionary

  • dihedral — noun Date: circa 1911 1. dihedral angle 2. the angle between an aircraft supporting surface (as a wing) and a horizontal transverse line …   New Collegiate Dictionary

  • dihedral — 1. noun a) An angle between two plane surfaces b) The upward slope of an aircrafts wing 2. adjective Consisting of, relating to or contained between two plane surfaces …   Wiktionary

  • dihedral — /duy hee dreuhl/, adj. 1. having or formed by two planes. 2. of or pertaining to a dihedron. n. 3. dihedron. 4. Aeron. the angle at which the right and left wings or the halves of any other horizontal surface of an airplane or the like are… …   Universalium

  • dihedral — di·he·dral || daɪ hiːdrÉ™l adj. having two plane faces (Mathematics) n. angle between an aircraft wing and the horizontal; angle that is formed by two planes (Mathematics) …   English contemporary dictionary

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