# پی

*See also:*

**بی**

## Contents

## Persian[edit]

### Etymology 1[edit]

#### Pronunciation[edit]

- IPA
^{(key)}: /piː/

#### Noun[edit]

**پی** • (pi)

- The letters "P" and the Greek "Π"
- (mathematics) Pi, An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.1415926535897932384626433832795; usually written π.

### Etymology 2[edit]

#### Pronunciation[edit]

- IPA
^{(key)}: /pej/

#### Noun[edit]

**پی** • (pey)

- (architecture) A foundation; the lowest and supporting part or member of a wall, including the base course and footing courses; in a frame house, the whole substructure of masonry.
- behind, back