dihedral
Upper-Intermediate (B2)
IPA: //daɪˈhɛdrəl//
KK: /daɪˈhɛdrl/
adjective
Definition
Describing a shape or angle that has two flat surfaces or faces.
Example
The dihedral angle between the two planes is crucial in determining the structure of the molecule.
Conversation
Did you see the dihedral shapes in our geometry class today?
Yeah, they were pretty interesting!
I never realized how much those dihedral angles could affect the design of buildings.
Right? It’s amazing how math is so connected to real life.
Synonyms & Antonyms
Synonyms
bifacial
twofold
dual
Antonyms
monofacial
single
unilateral
noun
Definition
A specific angle formed between two intersecting planes, often used in aeronautics and mathematics.
Example
The dihedral of the aircraft's wings helps improve its stability during flight.
Conversation
Did you know that the shape of an aircraft wing is influenced by its dihedral angle?
Really? I always thought it was just about the design.
Nope, the dihedral angle helps with stability during flight.
Root Explanation
Dihedral is formed from "di-" (meaning two) and "hedron" (from Greek "hedra", meaning face or base). The term describes a geometric figure with two faces or planes, typically referring to angles formed by two intersecting planes.
Memory Tip
Think of 'two' ('di-') faces or planes ('hedron') coming together to form a dihedral angle.
Visually Confused Words
diedral
diplohedral
trihedral
dioctahedral
dendral