We found 8 dictionaries that define the word S-4:

General (2 matching dictionaries)

1. S-4: Wordnik
2. S-4: Dictionary.com

Business (1 matching dictionary)

3. S-4: Webster's New World Finance & Investment Dictionary

Medicine (1 matching dictionary)

4. S-4: Medical dictionary

Miscellaneous (3 matching dictionaries)

5. S-4: Acronym Finder
6. AbbreviationZ (No longer online)
7. Third Eye's Paranormal (No longer online)

Tech (1 matching dictionary)

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

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