noun
thermosphere
THUR-muh-sfeer
Thermosphere (noun) means the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere. Example: “The thermosphere lies above the mesosphere.”
noun
1
The layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere.
"The thermosphere lies above the mesosphere."
"Above the thermosphere is the exosphere."
"A textbook diagram showed the thermosphere as one of the layers of the atmosphere."
How to use thermosphere
Learner’s notesIn plain EnglishThe layer of the atmosphere between the mesosphere and the exosphere.
When to use it
It is a scientific term used in atmospheric science and geography.
Memory tip
Remember that thermo- relates to heat and -sphere to a layer around the Earth, to place it in the list of atmospheric layers.
Trace the full origin ↓
Easily confused with
mesosphere
exosphere →
Common pairings
Earth's thermosphere
upper thermosphere
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Fill the gap
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The _____ lies above the mesosphere.
Etymology
The word was formed in English from the prefix thermo- and the ending -sphere.
Rhymes for thermosphere
See all rhymes for thermosphere →Frequently asked questions
Where is the thermosphere?
It is the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere.
What is the thermosphere?
It is one of the layers of the Earth's atmosphere.
What is above the thermosphere?
The exosphere lies directly above it.
What is the meaning of thermosphere?
"thermosphere" (noun) means the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere.
