We found 10 dictionaries that define the word pneumatic caisson:

General (8 matching dictionaries)

1. pneumatic caisson: Merriam-Webster
2. pneumatic caisson: Vocabulary.com
3. pneumatic caisson: Wordnik
4. Pneumatic caisson, pneumatic caisson: Dictionary.com
5. pneumatic caisson: Rhymezone
6. pneumatic caisson: FreeDictionary.org
7. pneumatic caisson: Mnemonic Dictionary
8. pneumatic caisson: TheFreeDictionary.com

Computing (1 matching dictionary)

9. pneumatic caisson: Encyclopedia

Tech (1 matching dictionary)

10. Bridge Dictionary (No longer online)

(Note: See pneumatic_caissons as well.)

Definitions from WordNet (pneumatic caisson) ▸ noun:  large watertight chamber used for construction under water ▸ Words similar to pneumatic caisson ▸ Usage examples for pneumatic caisson ▸ Idioms related to pneumatic caisson ▸ Wikipedia articles (New!) ▸ Words that often appear near pneumatic caisson ▸ Rhymes of pneumatic caisson ▸ Invented words related to pneumatic caisson