upsilon /ūp-sīˈlon, ŭp-, ūpˈsi- or upˈsi-/ or ypsilon /ip-sīˈlon or ipˈsi-/

1. The twentieth letter of the Greek alphabet (Υ, υ)
2. As a numeral υˈ = 400, ˌυ = 400000
3. A short-lived heavy subatomic particle produced when beryllium nuclei are bombarded with high-energy protons

• credit squeeze
• credit standing
• credit titles
• credit transfer
• credit transfers
• credit union
• credit unions
• creditworthiness
• creditworthy
• credo
• credos
• creds
• credulities
• credulity
• credulous
• credulously
• credulousness
• credulousnesses
• cree
• Cree
• creed
• Creed
• creedal
• creeds
• creeing