2 entries found for pi.
To select an entry, click on it.
Main Entry: pi
Pronunciation: p
Function: noun
Inflected Form(s): plural pis /pz/ 1: the 16th letter of the Greek alphabet -- Π or π 2 a: the symbol π representing the ratio of the circumference of a circle to its diameter b: the ratio itself having a value of approximately 3.1416