We found 27 dictionaries that define the word far out:

General (20 matching dictionaries)

1. far-out: Merriam-Webster
2. far out: Oxford Learner's Dictionaries
3. far-out: American Heritage Dictionary of the English Language
4. far-out, far-out, far out: Collins English Dictionary
5. far-out: Vocabulary.com
6. Far-out, far-out: Wordnik
7. far-out: Cambridge Advanced Learner's Dictionary
8. far-out, far out: Wiktionary
9. far-out: Webster's New World College Dictionary, 4th Ed.
10. far-out: Infoplease Dictionary
11. far-out, far out: Dictionary.com
12. far-out: Cambridge Essential American English Dictionary
13. Far Out (album), Far Out (book), Far Out (disambiguation), Far Out: Wikipedia, the Free Encyclopedia
14. far-out: Rhymezone
15. far-out: FreeDictionary.org
16. far-out: Mnemonic Dictionary
17. far-out: TheFreeDictionary.com
18. far out: Longman Dictionary of Contemporary English

Computing (1 matching dictionary)

19. far-out: Encyclopedia

Miscellaneous (2 matching dictionaries)

20. AbbreviationZ (No longer online)
21. far out: Idioms

Science (1 matching dictionary)

22. Far Out: Eric Weisstein's World of Mathematics

Slang (3 matching dictionaries)

23. far out, far out: Green’s Dictionary of Slang
24. far-out: English slang and colloquialisms used in the United Kingdom
25. Far Out: 1960's Slang

Definitions from Wiktionary (far out) ▸ adjective:  (informal) New, radical and extreme. ▸ adjective:  Used other than figuratively or idiomatically: see far, out. Similar: kinky, quirky, offbeat, way-out, unconventional, far-out, way out, overfar, way off, extreme, more... Opposite: near, close, nearby Phrases: Far Out Magazine, Far Out Space Nuts, far out of reach, more... Adjectives: flat out, stay at home, next level, red-faced, cut down, frontside, every second, each way, up in the air, caught stealing, all the same ▸ Words similar to far out ▸ Usage examples for far out ▸ Idioms related to far out ▸ Wikipedia articles (New!) ▸ Popular nouns described by far out ▸ Words that often appear near far out ▸ Rhymes of far out ▸ Invented words related to far out