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trop·o·sphere
 troposphere
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- pronunciation:
- tra
p
sfir
[or]
tro
p
sfIr
- features:
- Word Combinations (noun), Word Parts
| part of speech: |
noun |
| definition: |
the innermost layer of the atmosphere, up to six to twelve miles above the earth's surface, in which clouds and other weather conditions occur.
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| derivation: |
tropospheric (adj.) |
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