پی

See also: بی‎

Persian

Etymology 1
When a circle's diameter is 1 unit, its circumference is π units.
When a circle's radius is 1 unit, its circumference is 2π units.

Pronunciation
  • IPA(key): /piː/

Noun

پی • (pi)

  1. The letters "P" and the Greek "Π"
  2. (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.

Pronunciation
  • IPA(key): /pej/

Noun

پی • (pey)

  1. (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.
  2. behind, back
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