# Pi (letter): Wikis

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# Encyclopedia

 Greek alphabet Obsolete letters Other characters Αα Alpha Νν Nu Ββ Beta Ξξ Xi Γγ Gamma Οο Omicron Δδ Delta Ππ Pi Εε Epsilon Ρρ Rho Ζζ Zeta Σσς Sigma Ηη Eta Ττ Tau Θθ Theta Υυ Upsilon Ιι Iota Φφ Phi Κκ Kappa Χχ Chi Λλ Lambda Ψψ Psi Μμ Mu Ωω Omega Digamma Qoppa San Sampi Stigma Sho Heta Greek diacritics

Pi (uppercase Π, lower case π) is the sixteenth letter of the Greek alphabet, representing [p]. In the system of Greek numerals it has a value of 80. Letters that arose from pi include Cyrillic Pe (П, п), Coptic pi (Ⲡ, ⲡ), and Gothic pairthra (𐍀).

In Modern Greek, the name of the letter is pronounced [ˈpi]; in modern English, it is pronounced /ˈpaɪ/, in particular when referring to the mathematical constant (see below).

The upper-case letter Π is used as a symbol for:

The lower-case letter π is used as a symbol for:

Variant pi or "pomega" ($\varpi\,\!$ or ϖ) is a glyph variant of lower case pi sometimes used in technical contexts as though it were a lower-case omega with a macron, though historically it is simply a cursive form of pi, with its legs bent inward to meet. It is used as a symbol for:

In Unicode, the code point for capital Π is U+03A0 and for lower-case π it is U+03C0. The code point for ϖ, called greek pi symbol, is U+03D6, and that for the product symbol ∏, called n-ary product, is U+220F.

In HTML, the capital letter Π can be produced using the codes &Pi; or &#928;, and the lower-case by using &pi; or &#960; within the source code.

# Simple English

 Common letters Uncommon letters Other letters Αa A Μm Em Βb Be Νn En Gg Ge Οο O Δd De Πp Pe h Ha Жж Zhe Εɛ E Rr Ar Ζz Ze Ss Es Ηe Ee Τt Te Θө Eth Uu U Ιi I Ff Ef Jj Je Ww Wa Κk Ka Χx Xa Ll El ОWоw We Vv Ve Digamma Qoppa San Sampi Stigma Sho Greek alphabet

Pi (uppercase/lowercase Π π), is the letter of the Greek alphabet, used to represent the "p" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 80. Letters that came from it include the Roman P and Cyrillic П.