We found 19 dictionaries that define the word downdraft:

General (15 matching dictionaries)

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

Computing (1 matching dictionary)

16. downdraft: Encyclopedia

Science (1 matching dictionary)

17. Weather Glossary (No longer online)

Tech (2 matching dictionaries)

18. Glossary of Meteorology (No longer online)
19. National Weather Service Glossary (No longer online)

(Note: See downdrafts as well.)

Definitions from Wiktionary (downdraft) ▸ noun:  (meteorology, American spelling) A strong, downward air current; an air pocket or air hole. Similar: downdraught, downdraw, downburst, updraft, updraught, outdraft, downwash, draft, through-draught, drainage, more... Opposite: updraft, upward current, upward draft Types: dry, wet, convective, gravity, mechanical, more... Phrases: downdraft carburetor, Rear flank downdraft, more... Adjectives: strong, sudden, cold, powerful, flank, rear, severe, cool, violent, microburst, sharp ▸ Words similar to downdraft ▸ Usage examples for downdraft ▸ Idioms related to downdraft ▸ Wikipedia articles (New!) ▸ Popular adjectives describing downdraft ▸ Words that often appear near downdraft ▸ Rhymes of downdraft ▸ Invented words related to downdraft