We found 7 dictionaries that define the word first-in first-out:

General (1 matching dictionary)

1. first-in first-out: Dictionary.com

Business (3 matching dictionaries)

2. Comprehensive Financial (No longer online)
3. First-in first-out: Legal dictionary
4. First-in first-out: Financial dictionary

Computing (2 matching dictionaries)

5. first-in first-out: Free On-line Dictionary of Computing
6. first-in first-out: Encyclopedia

Medicine (1 matching dictionary)

7. online medical dictionary (No longer online)

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