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upper air
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This shows grade level based on the word's complexity.
noun Meteorology.
the atmosphere above the lower portion of the troposphere.
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Compare upper atmosphere.
Origin of upper air
First recorded in 1875â80
Words nearby upper air
upon, up one's alley, up one's sleeve, up-or-out, upper, upper air, Upper Arlington, upper arm, upper atmosphere, Upper Austria, upper bound
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023