noun

stratosphere

stratosphere

The balloon ascended into the stratosphere.

The balloon ascended into the stratosphere.

Ozone is found in the Earth's stratosphere.

Ozone is found in the Earth's stratosphere.

((the stratosphere)) the layer of the earth's atmosphere above the troposphere The balloon ascended into the stratosphere.

Synonyms: upper atmosphere

From Latin 'stratus' (a spreading out, layer) + 'sphere'. So, a 'layered sphere' around the Earth.

Think of 'strata' (layers) in a 'sphere' (the sky). It's the layered part of the atmosphere.

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