from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Mathematics The angle formed by two intersecting planes.
- n. Aeronautics The dihedral of an aircraft wing.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The angle between two planes.
from the GNU version of the Collaborative International Dictionary of English
- adj. the angular space contained between planes which intersect. It is measured by the angle made by any two lines at right angles to the two planes.
Sorry, no etymologies found.
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