Related Clues:

• Small dollops
• P as in physics
• Letter shaped like a P
• Letter between pi and sigma
• Greek letter that looks like a "P"
• Symbol for density
• Letter after pi
• The 'r' in Aristotle
• It follows pi
• Fraternity P
• P-like Greek letter
• Greek character
• Pi-sigma link
• Christogram component, perhaps
• Pi's follower