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| Beau·fort scale [ bṓfərt skayl ] |
noun |
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| Definition: |
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scale for measuring wind speed: an international scale of wind speeds indicated by numbers ranging from 0 for calm to 12 for hurricane. Each force is recognized by its effects on things such as flags and trees and on the surface of the sea.
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| [Mid-19th century. After Sir Francis Beaufort (1774-1857), Irish admiral and hydrographer] |
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