We found 15 dictionaries that define the word FSs:

General (6 matching dictionaries)

1. FS's: Wordnik
2. FSS: Dictionary.com
3. FSS (brand), FSS: Wikipedia, the Free Encyclopedia
4. FSS: Stammtisch Beau Fleuve Acronyms
5. FSS: TheFreeDictionary.com
6. FSS: Wiktionary

Business (1 matching dictionary)

7. Glossary of Trade and Shipping Terms (No longer online)

Computing (1 matching dictionary)

8. FSS: Encyclopedia

Medicine (1 matching dictionary)

9. Multiple Sclerosis Encyclopaedia (No longer online)

Miscellaneous (2 matching dictionaries)

10. FSS: Acronym Finder
11. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

12. fss: Urban Dictionary

Tech (3 matching dictionaries)

13. FSS: Webster's New World Telecom Dictionary
14. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)
15. FSS: Air Traffic Management Glossary of Terms

Definitions from Wiktionary (FSS) ▸ noun:  (pathology) Initialism of functional somatic syndrome. Opposite: as, so, such, like, than, as if, as though, as though as if, as if as though ▸ Words similar to FSs ▸ Usage examples for FSs ▸ Idioms related to FSs ▸ Wikipedia articles (New!) ▸ Popular adjectives describing FSs ▸ Words that often appear near FSs ▸ Rhymes of FSs ▸ Invented words related to FSs