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nounthe lowest atmospheric layer; from 4 to 11 miles high (depending on latitude)type of:part of:
Definition that contains troposphere
- stratosphere the atmospheric layer between the troposphere and the mesosphere
- tropopause the region of discontinuity between the troposphere and the stratosphere
- jet stream a high-speed high-altitude airstream blowing from west to east near the top of the troposphere; has important effects of the formation of weather fronts