Cloud Nine Definition

noun
A condition of great joy or bliss; euphoric state.
Webster's New World
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Origin of Cloud Nine

  • Popular etymology references the 1896 edition of the International Cloud Atlas which defined ten types of cloud. The book defined the ninth cloud as the cumulonimbus, which rises to 10 km (6.2 miles), the highest a cloud can be. No conclusive evidence, however, confirms this origin.

    From Wiktionary

  • The 1960 print of the Dictionary of American Slang (Wentworth & Flexner) includes “cloud seven”, which seems to predate “cloud nine” by a few years. Other etymologies reference Buddhist or Christian lore, and even Dante’s Divine Comedy, but again, no evidence prefers these versions.

    From Wiktionary

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