dihedral

[ dahy-hee-druh l ]
/ daɪˈhi drəl /

adjective

having or formed by two planes.
of or relating to a dihedron.

noun

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.

Origin of dihedral

First recorded in 1790–1800; di-1 + -hedral
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dihedral

British Dictionary definitions for dihedral

dihedral

/ (daɪˈhiːdrəl) /

adjective

having or formed by two intersecting planes; two-sideda dihedral angle

noun

Also called: dihedron, dihedral angle the figure formed by two intersecting planes
the US name for corner (def. 2)
the upward inclination of an aircraft wing in relation to the lateral axisCompare 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

Science definitions for dihedral

dihedral

[ dī-hēdrəl ]

Formed by a pair of planes or sections of planes that intersect.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.