Pi Day

== English == === Etymology === pi + day, from the date March 14th in the month/day format (that is, 3/14), 3, 1 and 4 being the first three significant digits of the mathematical constant π. === Pronunciation === (Received Pronunciation, General American) IPA(key): /ˈpaɪ deɪ/ === Proper noun === Pi Day March 14th, an annual celebration of the mathematical constant π (pi). ==== Alternative forms ==== π Day ==== Translations ==== === Further reading === Pi Day on Wikipedia.Wikipedia === Anagrams === ypaid