Browse All Abbreviation Categories
- 18381. Ultrasound
- 18382. Ultraviolet
- 18383. Umbilical
- 18384. Umbrella
- 18385. Ump
- 18386. Umpire
- 18387. Umts
- 18388. UN The 'UN' category focuses on abbreviations related to the United Nations. This global body tackles everything from climate change to human rights, and its language is rich with complex terms and acronyms.
- 18389. Unarmed
- 18390. Unbalanced
- 18391. Uncertainty
- 18392. Uncia
- 18393. Unclassified
- 18394. Uncle
- 18395. Unconditional
- 18396. Unconventional
- 18397. Undercarriage
- 18398. Underdog
- 18399. Undergarment
- 18400. Undergraduate