What does "mesosphere" mean?

The layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere.

What is a synonym for "mesosphere"?

Common synonyms include: lower mantle, mesolayer.

noun

noun ·Rare ·Advanced level

Noun

1
The layer of the Earth's atmosphere that is directly above the stratosphere and directly below the thermosphere.
"The mesosphere may be described as the earth's intermediate or middle atmosphere, which separates the thermosphere above from the ozonosphere (or stratosphere) below, both of which are responsible for absorption of most of the ultraviolet part of the solar radiation and preventing it from reaching the earth's surface."
2
the atmospheric layer between the stratosphere and the thermosphere wordnet
3
The lower mantle, a layer inside the Earth.

"Have you ever seen a meteor shower, where meteors burn up and streak across the sky? Those meteors are burning up in the mesosphere."

From meso- + -sphere.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.