# pi

**Noun**

**pi** (*plural:* **pis**)

- The name of the sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
- (
*mathematics*) An irrational constant representing the ratio of the circumference of a circle to its diameter; approximately 3.1415927; usually written Ï€, where pi x diameter = Circumference. - (
*typesetting*) metal type that has been spilled, mixed together, or disordered. Also called pie.

**Synonyms:**

*(irrational constant)*Archimedes" constant, Ludolph"s constant, Ludolph"s number

**2** letters in word "pi": ** I P**.

No anagrams for **pi** found in this word list.