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Short "hint"

n. - Upper boundary of the lowest level of Earth's atmosphere, from zero altitude to about 15 km above the surface.

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Usage examples (32)
  • The tropopause is the “roof of weather”, the top of the weather-containing troposphere.
  • Getting beyond the tropopause is a trick for us, but molecules manage to bumble their way beyond it anyway without our help.
  • Above the tropopause is the stratosphere.
  • The temperature in the tropopause is relatively constant.
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