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We found 14 dictionaries with English definitions that include the word lighter-than-air:
Click on the first link on a line below to go directly to a page where "lighter-than-air" is defined.

General (14 matching dictionaries)

1. lighter-than-air: Merriam-Webster.com [home, info]
2. lighter-than-air: Oxford Dictionaries [home, info]
3. lighter-than-air: American Heritage Dictionary of the English Language [home, info]
4. lighter-than-air: Vocabulary.com [home, info]
5. lighter-than-air: Webster's New World College Dictionary, 4th Ed. [home, info]
6. lighter-than-air: Infoplease Dictionary [home, info]
7. lighter-than-air: Dictionary.com [home, info]
8. lighter-than-air: UltraLingua English Dictionary [home, info]
9. Lighter-than-air: Wikipedia, the Free Encyclopedia [home, info]
10. lighter-than-air: Rhymezone [home, info]
11. lighter-than-air: Free Dictionary [home, info]
12. lighter-than-air: Mnemonic Dictionary [home, info]
13. lighter-than-air: LookWAYup Translating Dictionary/Thesaurus [home, info]
14. lighter-than-air: Dictionary/thesaurus [home, info]

Quick definitions from WordNet (lighter-than-air) ▸ adjective:  relating to a balloon or other aircraft that flies because it weighs less than the air it displaces ▸ Words similar to lighter-than-air ▸ Usage examples for lighter-than-air ▸ Popular nouns described by lighter-than-air ▸ Words that often appear near lighter-than-air ▸ Rhymes of lighter-than-air ▸ Invented words related to lighter-than-air