Related Clues:

• Pitchfork-shaped Greek letters
• Greek letters that look like tridents
• Letters before omegas
• Trident-shaped Greek letters
• Next-to-last Greek letters
• Three-pronged letters
• Wave function symbols
• They resemble pitchforks
• Greek letters resembling tridents
• Penultimate Greek letters
• They resemble tridents
• Twenty-third Greek letters
• Letters between chis and omegas
• Lesbos letters
• Greek letters resembling pitchforks