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| di·he·dral [ dī hdrəl ] (plural di·he·drals) |
noun |
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| Definition: |
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1. angle made between surfaces: the angle contained between two planes that intersect, measured by the angle made by any two lines at right angles to the two planes
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2. angle of an aircraft wing: the angle between an upwardly inclined aircraft wing and a horizontal line
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| [Late 18th century. <di-1 + Greek hedra "seat, base"] |
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