We found 6 dictionaries that define the word usab:

General (2 matching dictionaries)

1. usab: Wordnik
2. USAB: Dictionary.com

Miscellaneous (2 matching dictionaries)

3. USAB: Acronym Finder
4. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

5. U.S.A.B: Urban Dictionary

Tech (1 matching dictionary)

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

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