[dʌɪˈhiːdr(ə)l], (Adjective)

Definitions:
- having or contained by two plane faces
(e.g: a dihedral angle)


Phrases:

Origin:
late 18th century: from di- ‘two’ + -hedral (see -hedron)

[dʌɪˈhiːdr(ə)l], (Noun)

Definitions:
- an angle formed by two plane faces

- inclination of an aircraft's wing from the horizontal, especially upwards away from the fuselage

- a place where two planes of rock meet at an angle of between 60° and 120°


Phrases:

Origin:
late 18th century: from di- ‘two’ + -hedral (see -hedron)