1. The 20th letter of the Greek alphabet

Derived forms: upsilons

Type of: alphabetic character, letter, letter of the alphabet

Part of: Greek alphabet

Encyclopedia: Upsilon

• U.S. National Library of Medicine
• U.S. waters
• U308
• UAE
• uakari
• uber-
• ubergeek
• ubersexual
• ubiety
• ubiquinone
• ubiquitous
• ubiquitously
• ubiquitousness
• ubiquity
• Ubykh
• UC
• Uca
• UCAS
• UDA
• udder
• Udmurt
• udometer
• UEFA
• Uey
• Ufa