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Structural Isomer 

Any of two or more chemical compounds, such as propyl alcohol and isopropyl alcohol, having the same molecular formula but different structural formulas.

anisotropic isomer 

An appellation which refers to the "weightless" quality of time.

The idea that time has force in linear terms but not weight.
The isomorphic theory of time tells us that in order for time to be isomorphic everything must look the same (be automorphic).

The anisotropic isomer theory-of-time tells us that time can have an isomorphic structure under the condition that it is WEIGHTLESS-IN-ITSELF.

Isometric Exercise 

The act of stretching your calves on the window.
Skinner: "Superintendent!.. I was just...stretching my calves on the windowsill! Isometric Exercise! Care to join me?"
A very very beautiful girl, who struggles to find who she is but is always so determined on herself and what truly matters. Guys want her but she doesn’t want any guy, she waits until the one comes. She’s patient, hot, smart, and can make you laugh in a second. She has one of the most prettiest smiles you can witness. You’ll want her so bad because she can be a baddie and has a great style but also because she has a personality that words can’t describe. She is a kind-hearted girl with good intentions but at times can be kind of bitchy but always for a good reason. You’ll know you don’t deserve her but she really cares about anyone who’s a part of her life. She is one in a trillion. Don’t ever lose a Ismerai because that’s when you fuck up. She’ll love you like no other and once you decide to leave then it’s over for you.
Hey dude , I’m definitely going to marry her.
Im not going to the wedding if it’s not Ismerai bro
Ismerai by Ism_r October 28, 2018

isomorphism

Abstract algebra: Take a group G, and a group H, with a group operation *. G is isomorphic to H if there exist a map f: G->H such that:

1: f is injective
2: f is surjective
3: f(a*b)=f(a)*f(b) for all a,b in G

If f satisfies these three properties, f is called an isomorphism.
The map f: Z -> E given by f(a)=2a where Z is the integers and E is the even integers is an isomorphism.

Proof:
Showing injectivity

f(b)=f(a) => 2a=2b (from the given function) <=> a=b

Showing surjectivity
Suppose n is in E. n is an even integer hence n=2k for some integer k.

f(k)=2k=n, hence f is surjective.

Homomorphism:
f(a+b)=2(a+b)=2a+2b=f(a)+f(b)

Hence f is an isomorphism. Q. E. D.
isomorphism by qsqazxcvfrew March 29, 2018

ismerlin 

The wife of darnell
oh that’s ismerlin Darnell’s wife
ismerlin by ganger21 November 24, 2021
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The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
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

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
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
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

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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