dihedral

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English[edit]

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Wikipedia

Etymology[edit]

di- +‎ -hedral

Pronunciation[edit]

Noun[edit]

dihedral ‎(plural dihedrals)

  1. (mathematics) An angle between two plane surfaces
  2. (aeronautics) The upward slope of an aircraft's wing
  3. (chemistry) The angle between pairs of chemical bonds separated by a third bond

Adjective[edit]

dihedral ‎(not comparable)

  1. (mathematics) Consisting of, relating to or contained between two plane surfaces.
    dihedral angle
  2. (of a kite or an aeroplane) Having wings that form a dihedral angle, especially when the angle between the upper sides is less than 180°.
  3. (aviation) Of wing pairs, inclined at an upward angle to each other.

Antonyms[edit]