We found 27 dictionaries that define the word water vapor:

General (14 matching dictionaries)

1. water vapor: Merriam-Webster
2. water vapor: American Heritage Dictionary of the English Language
3. water vapor: Vocabulary.com
4. water-vapor: Wordnik
5. water-vapor, water vapor: Wiktionary
6. water vapor: The Wordsmyth English Dictionary-Thesaurus
7. water vapor: Infoplease Dictionary
8. water vapor: Dictionary.com
9. Water vapor: Wikipedia, the Free Encyclopedia
10. water vapor: Rhymezone
11. water vapor: FreeDictionary.org
12. water vapor: Mnemonic Dictionary
13. water vapor: TheFreeDictionary.com

Business (2 matching dictionaries)

14. Construction Term Glossary (No longer online)
15. Water vapor: Energy Dictionary

Computing (1 matching dictionary)

16. water vapor: Encyclopedia

Medicine (1 matching dictionary)

17. water vapor: Merriam-Webster Medical Dictionary

Miscellaneous (1 matching dictionary)

18. Encyclopedia of Graphic Symbols (No longer online)

Science (2 matching dictionaries)

19. Water Vapor: Solar Radiation Resource Terms
20. Atmospheric Chemistry and Air Quality (No longer online)

Tech (6 matching dictionaries)

21. AUTOMOTIVE TERMS (No longer online)
22. Water vapor: Building pathology glossary
23. Roofing Terms (No longer online)
24. Glossary of Meteorology (No longer online)
25. Lake and Water Word Glossary (No longer online)
26. VAPOR, WATER, WATER VAPOR: Power Engineering

(Note: See water_vapors as well.)

Definitions from Wiktionary (water vapor) ▸ noun:  Water in a gaseous state, especially when diffused in the atmosphere. ▸ noun:  Steam. Similar: water vapour, vapor, water, water smoke, steam, liquid water, devaporation, diffusion, humidification, cloudwater, more... Opposite: liquid, condensation, precipitation, droplets, moisture Types: steam, fog, cloud, mist, more... Phrases: water vapor partial pressure, water vapor pressure, the water vapor in the atmosphere, water vapor in the atmosphere, obscures with water vapor, more... Adjectives: air-dry, dry, arid, vaporific, wet, steam, precipitated, vapored, freezing, perspiratory, vaporous ▸ Words similar to water vapor ▸ Usage examples for water vapor ▸ Idioms related to water vapor ▸ Wikipedia articles (New!) ▸ Words that often appear near water vapor ▸ Rhymes of water vapor ▸ Invented words related to water vapor