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mes·o·sphere
 mesosphere
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- pronunciation:
- me
z
 s
fir
[or]
me
ss
fir
- features:
- Word Parts
| part of speech: |
noun |
| definition: |
the earth's atmosphere between the stratosphere and the thermosphere, or from twenty miles to fifty miles above the earth's surface.
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| derivation: |
mesospheric (adj.) |
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