adj, noun ·Uncommon ·Advanced level

Definitions

Noun

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

Adjective

1. 1
   Consisting of, relating to or contained between two plane surfaces. not-comparable

   "dihedral angle"

2. 2
   Having wings that form a dihedral angle, especially when the angle between the upper sides is less than 180°. not-comparable
3. 3
   Of wing pairs, inclined at an upward angle to each other. not-comparable

Synonyms

All synonyms

aeroplaneairplanebilaterallateralmany sidedmultilateral

Antonyms

All antonyms

anhedral

Etymology

From di- + -hedral.

Related phrases

dihedral angledihedral groupchemical bond

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.