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| strat·o·sphere [ stráttə sfr ] |
noun |
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| Definition: |
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1. region of atmosphere: the region of the Earth's atmosphere between the troposphere and mesosphere, from 10 km (6 mi) to 50 km (30 mi) above the Earth's surface. It has no clouds and is marked by gradual temperature increase.
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2. very high or highest position: a very high or the highest level or position
 The failure of the harvest is likely to send food prices into the stratosphere.
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| [Early 20th century. <stratum] |
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