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dihedral definition

di·he·dral (dī hē′drəl)

adjective

  1. having or formed by two intersecting plane faces a dihedral angle
    1. having wings that form a dihedral angle with each other, as some airplanes
    2. being inclined to each other at a dihedral angle: said of airplane wing pairs

Etymology: < di- + Gr hedra, a seat, base + -al

noun

  1. a dihedral angle
  2. the acute angle, normally upward, between the wings of certain airplanes, designed to improve lateral stability

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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