We found 43 dictionaries that define the word fad:

General (27 matching dictionaries)

1. FAD, fad: Merriam-Webster.com
2. FAD, fad: Oxford Learner's Dictionaries
3. FAD, fad: American Heritage Dictionary of the English Language
4. fad: Collins English Dictionary
5. fad: Vocabulary.com
6. Fad, fad: Wordnik
7. fad: Cambridge Advanced Learner's Dictionary
8. FAD, fad: Wiktionary
9. fad: Webster's New World College Dictionary, 4th Ed.
10. fad: The Wordsmyth English Dictionary-Thesaurus
11. fad: Infoplease Dictionary
12. FAD: Dictionary.com
13. fad: Online Etymology Dictionary
14. fad: Cambridge Essential American English Dictionary
15. FAD (disambiguation), FAD, Fad (disambiguation), Fad: Wikipedia, the Free Encyclopedia
16. Fad: Online Plain Text English Dictionary
17. fad: Webster's Revised Unabridged, 1913 Edition
18. fad: Rhymezone
19. fad, fad: AllWords.com Multi-Lingual Dictionary
20. FAD: Stammtisch Beau Fleuve Acronyms
21. Fad: Dictionary of Phrase and Fable (1898)
22. fad: Free Dictionary
23. fad: Mnemonic Dictionary
24. fad: LookWAYup Translating Dictionary/Thesaurus
25. FAD: Dictionary/thesaurus

Business (4 matching dictionaries)

26. MoneyGlossary.com (No longer online)
27. Glossary of Crop Abbreviations (No longer online)
28. fad: Legal dictionary
29. BusinessDictionary.com (No longer online)

Computing (2 matching dictionaries)

30. FAD: Free On-line Dictionary of Computing
31. FAD: Encyclopedia

Medicine (3 matching dictionaries)

32. Dorland's Illustrated Medical Dictionary (No longer online)
33. online medical dictionary (No longer online)
34. FAD: Medical dictionary

Miscellaneous (4 matching dictionaries)

35. Sociology (No longer online)
36. FAD: Acronym Finder
37. FAD: Three Letter Words with definitions
38. AbbreviationZ (No longer online)

Science (1 matching dictionary)

39. FAD: A Dictionary of Quaternary Acronyms and Abbreviations

Slang (1 matching dictionary)

40. F.A.D, F.A.D. (Firey Anus Discharge), The FAD: Urban Dictionary

Tech (1 matching dictionary)

41. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)

(Note: See faddish as well.)

Definitions from Wiktionary ( ) ▸ noun:  A phenomenon that becomes popular for a very short time. ▸ noun:  (biochemistry) Initialism of flavin adenine dinucleotide. Similar: craze, rage, cult, furore, furor, fad diet, fashion, flash crowd, fifteen minutes of fame, podfading, more... Opposite: trend, classic, timeless, staple Types: pet rock, pet fad, pet rock fad, pet fad rock, pet rock fad rock, more... Phrases: fad diets, fad diet, Novelty and fad dances, Fad Gadget, J. J. Fad, more... Adjectives: new, latest, current, mere, popular, recent, intellectual, next, national, bound, educational Colors:     neon pink,     electric blue,     lime green,     hot pink,     tangerine,     aqua,     chartreuse,     lavender,     coral,     teal ▸ Word origin ▸ Words similar to fad ▸ Usage examples for fad ▸ Idioms related to fad ▸ Wikipedia articles (New!) ▸ Popular adjectives describing fad ▸ Words that often appear near fad ▸ Rhymes of fad ▸ Invented words related to fad