We found 20 dictionaries that define the word ornithopter:

General (17 matching dictionaries)

1. ornithopter: Merriam-Webster
2. ornithopter: Oxford Learner's Dictionaries
3. ornithopter: American Heritage Dictionary of the English Language
4. ornithopter: Collins English Dictionary
5. ornithopter: Vocabulary.com
6. ornithopter: Wordnik
7. ornithopter: Wiktionary
8. ornithopter: Webster's New World College Dictionary, 4th Ed.
9. ornithopter: Infoplease Dictionary
10. ornithopter: Dictionary.com
11. ornithopter: Online Etymology Dictionary
12. Ornithopter (Dune), Ornithopter: Wikipedia, the Free Encyclopedia
13. ornithopter: Rhymezone
14. ornithopter: FreeDictionary.org
15. ornithopter: The Phrontistery - A Dictionary of Obscure Words
16. ornithopter: Mnemonic Dictionary
17. ornithopter: TheFreeDictionary.com

Art (1 matching dictionary)

18. ornithopter: Glossary of Science Fiction Jargon

Computing (1 matching dictionary)

19. Ornithopter (Dune), ornithopter: Encyclopedia

Slang (1 matching dictionary)

20. ornithopter: Urban Dictionary

(Note: See ornithopters as well.)

Definitions from Wiktionary (ornithopter) ▸ noun:  An aircraft that generates lift through the flapping of its wings. Similar: thopter, orthopter, wingflap, ornithoid, phœnicopter, direct flight, flyer, hedgehopper, ornithon, bird, more... Opposite: ground vehicle, non-flying machine, terrestrial vehicle ▸ Word origin ▸ Words similar to ornithopter ▸ Usage examples for ornithopter ▸ Idioms related to ornithopter ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ornithopter ▸ Words that often appear near ornithopter ▸ Rhymes of ornithopter ▸ Invented words related to ornithopter