Related Clues:

• Type of cross
• Sigma-Upsilon connection
• Letter after rho
• Kind of lepton
• Upsilon preceder
• Cross-shaped character
• Letter on some college sweatshirts
• Follower of sigma
• Greek "T"
• Letter after sigma
• Plato's T
• Greek letter
• Letter from Greece
• It's found in Athens
• Rho follower