We found 12 dictionaries that define the word UPU:

General (6 matching dictionaries)

1. UPU: Oxford Learner's Dictionaries
2. UPU: Wiktionary
3. UPU: Dictionary.com
4. U.P.U, UPU, Upu: Wikipedia, the Free Encyclopedia
5. UPU: Stammtisch Beau Fleuve Acronyms
6. UPU: TheFreeDictionary.com

Art (1 matching dictionary)

7. Glossary of Stamp Collecting Terms (No longer online)

Computing (1 matching dictionary)

8. Upu: Encyclopedia

Miscellaneous (3 matching dictionaries)

9. CIA World Factbook (No longer online)
10. UPU: Acronym Finder
11. AbbreviationZ (No longer online)

Tech (1 matching dictionary)

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

Definitions from Wiktionary (UPU) ▸ noun:  Initialism of Universal Postal Union. [A worldwide postal organization, part of the United Nations.] Similar: postal, philatelic, airmail, aerophilately, postmark, poste restante, aerogram, date stamp, air letter, WMO, more... ▸ Words similar to UPU ▸ Usage examples for UPU ▸ Idioms related to UPU ▸ Wikipedia articles (New!) ▸ Popular adjectives describing UPU ▸ Words that often appear near UPU ▸ Rhymes of UPU ▸ Invented words related to UPU