When the irrational and transcendental number π occasionally reveals herself to excite the mathematical brethren of her numerical or geometric hidden properties, be it through some new beautiful pattern or little juicy theorem.
Both number theorists and numerologists get pretty aroused when they get invited to attend a pi striptease event (by invitation only), whose aha! moments could get them mathematically excited for days.
by MathPlus September 1, 2021

A dance move which involves pointing your elbows out and rotating your hands around by your chest as if imitating the movement of the bond between 2 p-orbitals as seen in chemistry.
by ibfml December 20, 2010

A bar chart whose adjacent vertical bars have heights proportionately based on the digits of the decimal number π—from a distance, the statistical diagram looks like a city skyline.
by MathPlus November 4, 2021

by CarterSmith September 12, 2023

The fifty-third second of 9:26 a.m. of March 14, 2015. So called because 3.141592653 is pi down to nine decimal places, and Pi Second is 3/14/15 9:26:53.
On Pi Second, we will play the sound of a bell ringing for all the world to hear! Pi Second is only one second out of every 100 years, so it only happens every three billion or so seconds. Enjoy the second while you can!
by Seshie January 6, 2014

When the passengers on a plane up in the sky are separately seated based on the the digits of the decimal number π—there are three empty seats between the first and second passenger, one empty seat between the second and third passenger, four empty seats between the third and fourth passenger, and so on.
by Fasters December 24, 2021

When movies on math, or those that depict the odd behaviours of oft-mad mathematicians or idiot-savants, never fail to mention the number π and some of its magical properties.
With pi being part of pop culture, it’s not surprising to hear mathophobic actors in Hollywood complain about reel pi, as it reminds them of their bad experiences of school math, especially if they’d flunked the subject several times prior to making it big in the entertainment industry.
by Fasters May 30, 2022
