PI

PI is short for the Philippine Islands. Philippine Islands is the old name of the Republic of the Philippines. The Philippines was formerly known as Las Islas Filipinas, named after King Felipe II of Spain, when it was a colony of Spain from 1565 to 1898. Then it was Anglicized and it became known as the Philippine Islands when it became a U.S. territory shortly after the Spanish-American War of 1898. In 1946, upon independence from the U.S., it became a republic. The name of the country was then changed to the Republic of the Philippines.

Yo, I’m going back to the PI next year.

by The real Juan de la Cruz September 28, 2022

Pi Pa

A creepy ass grandpa, the type of grandpa that doesn't care about incest and talks like a smoker. Gets mad about everything and is horny all the fucking time.

"MOM!! Pi Pa is having the cat lick milk off his dick again!!!"

by traptears February 28, 2016

Predictive Pi

When both mathematicians and AI could forecast new mathematical results on the number π based on published papers and from recently awarded pi-related research grants.

Predictive pi has somewhat democrarized previously secretive research conducted by both pure and applied mathematicians around the globe.

by Numerati August 19, 2025

beta theta pi

The best frat ever. Which isn't saying much. All the guys are mid, yet the atmosphere is top tier. If you go to a beta party, you will feel like a ten simply because these men are desperate. Stay away from Topher.

1: Did you hear beta theta pi is throwing tonight?
2: Oh shit! Don't drink that wine again!

by bingbong27 January 9, 2022

Tai Ji and Pi

When the practice of Tai Ji (or T’ai Chi) could metaphysically or transcendentally propel someone to experience an aha! on the number π.

Speaking to a group of Buddhist mathematicians and math educators, a Tibetan lama challenged his audience to explore the mutual benefits of Tai Ji and Pi.

by Fasters January 25, 2022

pi

pi is the most beautiful girl in the world and she is also very smart and kind. Everybody admires her a lot due to her beauty and brightness

life's pi will be meaningful

by pi nguyễn November 25, 2021

Pi

A number that is 3.1415926535897932384626...
You can memorize the first 50 digits and then say you know hundreds because people get bored of listening to you say numbers.

You: I know 200 digits of pi
Friend: Show me
You: 3.141592653589793238-
Friend: Wow
You: That wasn't all of them
Friend: I don't care

by Ranger Russet January 15, 2024