The set of the most difficult problems in Mathematics, solvable in polynomial time only by a non-deterministic turing machine, but verifiable in polynomial time. In mathematics and computer science is shortened to np. Of course, the editors of UD would rather publish BULLSHIT or several thousand entries for George Bush than something having to do with math. Also, why won't they publish "S4R" is a perfectly acceptable definition.

Rule number 5 + Rule number 10 guys. Seriously. I'm an editor too.

Aaron: Did you know the editors of UD don't actually follow rules 5 and 10?
Mike: Yeah, they turned down my definition for "np", y'know, its short for "Non-deterministic Polynomial time".
James: Yeah, and then the go and publish shit like "S.C.L.I.D". Apparently technical terms for guns are fine, but not in Math.
Aaron: Yeah, seriousy uncouth.
Mike: HOLLA!

non-deterministic polynomial time by vaxt April 9, 2006

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polynomialbooboo

What happens when you aren't sure what the word for polygamous or polygamy is and your head is filled with math instead.

Mate thought multiple wives was polynomial or something so we told him he had a case of polynomialbooboo.

polynomialbooboo by Urbanono July 30, 2018

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Polytorian

A person which is a player on a sandbox game called Polytoria, most of the polytorians have dead sense of humor and are known for breaking the polytoria game servers because of the egg hunt event.

some dude: bod demo bod demo php shit backend
a guy: omg is that a polytorian
a guy 2: yeah he is, by his sense of humour

Polytorian by Green-Opolis April 20, 2022

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polytonic

A group of people all in a platonic relationship with one another.

Person A: Hey look at those guys!
Person B: Yeah, they must be in a polytonic relationship.

polytonic by franm August 9, 2017

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Boffin

British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.

According to the boffins downstairs, the murderer used a serrated blade.

Boffin by Agnon February 11, 2023

Word of the Day on October 3, 2026

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Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.

I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.

Pee Calculus by anorlondo October 1, 2026

Word of the Day on October 2, 2026

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Dutty

Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".

"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"

Dutty by J Hall April 3, 2003

Word of the Day on October 1, 2026

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Ajumma

korean word for madam, older woman

Ajumma wait a moment

Ajumma by aintnotinbutnice July 5, 2009

Word of the Day on September 30, 2026

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Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.

Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade

Slop Grenade by Joe Squid September 28, 2026

Word of the Day on September 29, 2026

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floxi

Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).

After we broke up, he was floxi to me.

floxi by Dr. Geek May 13, 2009

Word of the Day on September 28, 2026

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