# dihedral

> English word · Noun · IPA /daɪˈhiːdɹəl/ · frequency rank #85,175

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

## Etymology
From di- + -hedral.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/dihedral