π

Unicode name	GREEK SMALL LETTER PI
Codepoint	U+03C0
ο ← Greek and Coptic → ρ

See also ∏, ㄇ, ㅠ, and Appendix:Variations of "p"

Translingual

This mosaic is outside the mathematics building at the Technische Universität Berlin.

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.

Symbol

π

1. (mathematics) An irrational constant representing the ratio of the circumference of a circle to its diameter; approximately 3.14159265.

See also

• Π on Wikipedia.Wikipedia

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Greek

Letter

π (lowercase, uppercase Π)

1. The lower case letter pi (πι), the 16th letter of the modern Greek alphabet.

Numeral

π'

1. The number 80 in Greek numerals.

,π

1. The number 80,000 in Greek numerals.
2. (The Greek letter pi.)

See also

• Greek script: Αα Ββ Γγ Δδ Εε Ζζ Ηη Θθ Ιι Κκ Λλ Μμ Νν Ξξ Οο Ππϖ Ρρ Σσς Ττ Υυ Φφ Χχ Ψψ Ωω