We found 25 dictionaries that define the word thermosphere:

General (16 matching dictionaries)

1. thermosphere: Merriam-Webster
2. thermosphere: Oxford Learner's Dictionaries
3. thermosphere: American Heritage Dictionary of the English Language
4. thermosphere: Collins English Dictionary
5. thermosphere: Vocabulary.com
6. thermosphere: Wordnik
7. thermosphere: Wiktionary
8. thermosphere: Webster's New World College Dictionary, 4th Ed.
9. thermosphere: The Wordsmyth English Dictionary-Thesaurus
10. thermosphere: Infoplease Dictionary
11. thermosphere: Dictionary.com
12. Thermosphere: Wikipedia, the Free Encyclopedia
13. thermosphere: Rhymezone
14. thermosphere: FreeDictionary.org
15. thermosphere: Mnemonic Dictionary
16. thermosphere: TheFreeDictionary.com

Computing (1 matching dictionary)

17. thermosphere: Encyclopedia

Science (4 matching dictionaries)

18. Thermosphere: Eric Weisstein's World of Astronomy
19. Atmospheric Chemistry and Air Quality (No longer online)
20. Weather Glossary (No longer online)
21. THERMOSPHERE: Zoom Astronomy Glossary

Tech (4 matching dictionaries)

22. Thermosphere: Glossary of Air Pollution Terms
23. Glossary of Meteorology (No longer online)
24. National Weather Service Glossary (No longer online)
25. SOLAR-TERRESTRIAL TERMS (No longer online)

(Note: See thermospheres as well.)

Definitions from Wiktionary (thermosphere) ▸ noun:  The layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere. Similar: near space, stratosphere, protonosphere, neutrosphere, exosphere, space equivalent zone, exobase, ergosphere, thermion, atmospheric pressure, more... Opposite: mesosphere, stratosphere, troposphere, exosphere Adjectives: lower, upper, terrestrial, neutral, polar, latitude, jovian, whole, venusian, middle, hot ▸ Words similar to thermosphere ▸ Usage examples for thermosphere ▸ Idioms related to thermosphere ▸ Wikipedia articles (New!) ▸ Popular adjectives describing thermosphere ▸ Words that often appear near thermosphere ▸ Rhymes of thermosphere ▸ Invented words related to thermosphere