We found 15 dictionaries that define the word usr:

General (6 matching dictionaries)

1. usr: Wordnik
2. USR: Infoplease Dictionary
3. USR, USR, u.s.r: Dictionary.com
4. USR (Guadeloupe football club), USR (disambiguation), USR, Usr: Wikipedia, the Free Encyclopedia
5. USR: Stammtisch Beau Fleuve Acronyms
6. usr: Wiktionary

Computing (4 matching dictionaries)

7. USR, usr: Free On-line Dictionary of Computing
8. USR, usr: CCI Computer
9. BABEL: Computer Oriented Abbreviations and Acronyms (No longer online)
10. USR, /usr: Encyclopedia

Medicine (1 matching dictionary)

11. online medical dictionary (No longer online)

Miscellaneous (2 matching dictionaries)

12. USR: Acronym Finder
13. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

14. usr: Urban Dictionary

Tech (1 matching dictionary)

15. USR: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING

Definitions from Wiktionary (Usr) ▸ noun:  (computing) Abbreviation of user. [One who uses or makes use of something, a consumer or client or an express or implied licensee (free user) or a trespasser.] Similar: Ahmed, amen, ankh, bin, bran, da, fa, gar, harith, Hasan, more... Opposite: user, non-user, abstainer, avoider Phrases: USR PLUS, more... ▸ Words similar to usr ▸ Usage examples for usr ▸ Idioms related to usr ▸ Wikipedia articles (New!) ▸ Popular adjectives describing usr ▸ Words that often appear near usr ▸ Rhymes of usr ▸ Invented words related to usr