pi

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

• pē
  Play
• homophone: P
  Play
• homophone: p
  Play
• homophone: pea
  Play
• homophone: pee
  Play
• /paɪ/
  Play
• US: Recorded audio is listed in the source snapshot.
  Play
• rhymes with -aɪ
  Play
• homophone: pie
  Play
• CMU ARPABET: P AY1 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  Play

Unclear. Possibly from the Greek letter (see Etymology 1) as a common example of non-alphabetic character, possibly from pica (“type size”) (see Etymology 3), possibly from pie referring to its mixed nature or pied (“checkered, multicoloured”).

Abbreviations.

From Mandarin 郫 (Pí).

From Koine Greek πῖ (pî), from Ancient Greek πεῖ (peî), ultimately from Proto-Semitic *pay- (“mouth”). Doublet of pe. Its mathematical use apparently stems from its use as the first letter in περιφέρεια (periphéreia, “periphery; circumference”) and was first cited in 1706 in the Synopsis Palmariorum Matheseos by William Jones.

91 source translations are retained for this English entry.

• Finnish: erikois- — not part of the usual font
• Chinese Mandarin: 郫 (Pí) — former county in southwestern China
• Japanese: 郫 (hi) — former county in southwestern China
• Arabic: بِي (bī) — letter of Greek alphabet
• Arabic: پِي (pī) — letter of Greek alphabet
• Asturian: pi — letter of Greek alphabet
• Catalan: pi — letter of Greek alphabet
• Chinese Mandarin: 派 (pài) — letter of Greek alphabet
• Dutch: pi — letter of Greek alphabet
• Esperanto: pio — letter of Greek alphabet
• Finnish: pii — letter of Greek alphabet
• French: pi — letter of Greek alphabet
• Galician: pi — letter of Greek alphabet
• German: Pi — letter of Greek alphabet
• Greek: πι (pi) — letter of Greek alphabet
• Ancient Greek: πεῖ (peî) — letter of Greek alphabet
• Ancient Greek: πῖ (pî) — letter of Greek alphabet
• Gujarati: પાઇ (pāi) — letter of Greek alphabet
• Hebrew: פאי — letter of Greek alphabet
• Hebrew: פַּי (pay) — letter of Greek alphabet
• Hindi: पाइ (pāi) — letter of Greek alphabet
• Hungarian: pí — letter of Greek alphabet
• Icelandic: pí — letter of Greek alphabet
• Interlingua: pi — letter of Greek alphabet
• Irish: pí — letter of Greek alphabet
• Italian: pi greco — letter of Greek alphabet
• Japanese: パイ (pai) — letter of Greek alphabet
• Korean: 파이 (pai) — letter of Greek alphabet
• Northern Kurdish: pî — letter of Greek alphabet
• Latvian: pī — letter of Greek alphabet
• Macedonian: пи (pi) — letter of Greek alphabet
• Malay: pi — letter of Greek alphabet
• Persian: پی (pi) — letter of Greek alphabet
• Polish: pi — letter of Greek alphabet
• Portuguese: pi — letter of Greek alphabet
• Romanian: pi — letter of Greek alphabet
• Russian: пи (pi) — letter of Greek alphabet
• Serbo-Croatian: пи̑ — letter of Greek alphabet
• Serbo-Croatian: pȋ — letter of Greek alphabet
• Sindhi: پاءِ (pāi) — letter of Greek alphabet
• Slovak: pí — letter of Greek alphabet
• Slovene: pí — letter of Greek alphabet
• Spanish: pi — letter of Greek alphabet
• Swedish: pi — letter of Greek alphabet
• Turkish: pi — letter of Greek alphabet
• Arabic: ط (ṭāʔ) — irrational mathematical constant
• Arabic: بَاي (bāi) — irrational mathematical constant
• Chinese Cantonese: 圓周率 /圆周率 — irrational mathematical constant
• Chinese Mandarin: 圓周率 /圆周率 (yuānzhōulǜ) — irrational mathematical constant
• Chinese Mandarin: 派 (pài) — irrational mathematical constant
• Czech: pí — irrational mathematical constant
• Dutch: pi — irrational mathematical constant
• Finnish: pii — irrational mathematical constant
• French: pi — irrational mathematical constant
• German: Pi — irrational mathematical constant
• German: Kreiszahl — irrational mathematical constant
• Greek: πι (pi) — irrational mathematical constant
• Gujarati: પાઇ (pāi) — irrational mathematical constant
• Hindi: पाइ (pāi) — irrational mathematical constant
• Hungarian: pí — irrational mathematical constant
• Icelandic: pí — irrational mathematical constant
• Interlingua: pi — irrational mathematical constant
• Irish: pí — irrational mathematical constant
• Italian: pi greco — irrational mathematical constant
• Japanese: パイ (pai) — irrational mathematical constant
• Japanese: 円周率 (enshū ritsu) — irrational mathematical constant
• Kannada: ಪೈ (pai) — irrational mathematical constant
• Korean: 파이 (pai) — irrational mathematical constant
• Korean: 원주율 (wonjuyul) — irrational mathematical constant
• Northern Kurdish: pî — irrational mathematical constant
• Limburgish: pie — irrational mathematical constant
• Limburgish: pi — irrational mathematical constant
• Macedonian: пи (pi) — irrational mathematical constant
• Māori: pae — irrational mathematical constant
• Persian: پی (pi) — irrational mathematical constant
• Polish: pi — irrational mathematical constant
• Portuguese: pi — irrational mathematical constant
• Romanian: pi — irrational mathematical constant
• Russian: пи (pi) — irrational mathematical constant
• Serbo-Croatian: пи̑ — irrational mathematical constant
• Serbo-Croatian: pȋ — irrational mathematical constant
• Sindhi: پاءِ (pāi) — irrational mathematical constant
• Slovak: pí — irrational mathematical constant
• Slovene: pí — irrational mathematical constant
• Spanish: pi — irrational mathematical constant
• Swedish: pi — irrational mathematical constant
• Turkish: pi — irrational mathematical constant
• Turkish: pi sayısı — irrational mathematical constant
• Welsh: pi — irrational mathematical constant
• Italian: pasticcio — metal type that has been spilled
• Italian: confusione — metal type that has been spilled