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dihedral

American  
[dahy-hee-druhl] / daɪˈhi drəl /

adjective

  1. having or formed by two planes.

  2. of or relating to a dihedron.


noun

  1. dihedron.

  2. Aeronautics. the angle at which the right and left wings or the halves of any other horizontal surface of an airplane or the like are inclined upward or downward.

dihedral British  
/ daɪˈhiːdrəl /

adjective

  1. having or formed by two intersecting planes; two-sided

    a dihedral angle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. Also called: dihedron.   dihedral angle.  the figure formed by two intersecting planes

  2. the US name for corner

  3. the upward inclination of an aircraft wing in relation to the lateral axis Compare anhedral

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
dihedral Scientific  
/ dī-hēdrəl /
  1. Formed by a pair of planes or sections of planes that intersect.


Etymology

Origin of dihedral

First recorded in 1790–1800; di- 1 + -hedral

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Once you have effortlessly raised the wonderfully balanced dihedral door, you are presented with the task of awkwardly sliding yourself into the form fitting driver’s seat.

From The Verge • Dec. 29, 2017

Demonstrate that if two trihedral angles have dihedral angles respectively equal, then their face angles are equal.

From Time Magazine Archive

Soaring in the skies above Rome is not Christ but Marcello Mastroianni, all 154 pounds of him up there flying on a string like a great dihedral kite.

From Time Magazine Archive

They gathered in little groups, talking in terms of dihedral, torque, centre-of-gravity, drag, wing-loading, etc., etc.

From Time Magazine Archive

Students have more difficulty in grasping the meaning of the size of a polyhedral angle than is the case with dihedral and plane angles.

From The Teaching of Geometry by Smith, David Eugene

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