Definitions
1.nounAn angle between two plane surfaces
2.nounThe upward slope of an aircraft's wing
3.nounThe angle between pairs of chemical bonds separated by a third bond
4.adjectiveConsisting of, relating to or contained between two plane surfaces."dihedral angle"
5.adjective(of a kite or an aeroplane) Having wings that form a dihedral angle, especially when the angle between the upper sides is less than 180°.
6.adjectiveOf wing pairs, inclined at an upward angle to each other.