pi (thing)

Π or π (or in English, "pi") is the 16^th letter of the Greek alphabet.

The upper case form, Π , means:

• Π   product of a series (mathematics)

The lower case form, π , means:

• π   the ratio of a circle's circumference to its diameter, which is 3.14159... (math)
• π   population percentage (statistics)
• π   pion (physics)

As the top of this e2node indicates, pi is also an Everythingite.